{"id":9028,"date":"2023-02-14T00:21:12","date_gmt":"2023-02-13T16:21:12","guid":{"rendered":"https:\/\/blog.iyatt.com\/?p=9028"},"modified":"2024-05-05T14:18:23","modified_gmt":"2024-05-05T06:18:23","slug":"c-%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e5%9f%ba%e7%a1%80%ef%bc%88%e7%bc%96%e8%be%91%e4%b8%ad%ef%bc%89","status":"publish","type":"post","link":"https:\/\/blog.iyatt.com\/?p=9028","title":{"rendered":"C++ \u9762\u5411\u5bf9\u8c61"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">\u76ee\u5f55<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E7%8E%AF%E5%A2%83\" >\u73af\u5883<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E7%B1%BB\" >\u7c7b<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#class_%E5%92%8C_struct\" >class \u548c struct<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E6%9E%84%E9%80%A0%E5%87%BD%E6%95%B0%E5%92%8C%E6%9E%90%E6%9E%84%E5%87%BD%E6%95%B0\" >\u6784\u9020\u51fd\u6570\u548c\u6790\u6784\u51fd\u6570<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E6%8B%B7%E8%B4%9D%E6%9E%84%E9%80%A0%E5%87%BD%E6%95%B0\" >\u62f7\u8d1d\u6784\u9020\u51fd\u6570<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E5%8C%BF%E5%90%8D%E5%AF%B9%E8%B1%A1\" >\u533f\u540d\u5bf9\u8c61<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#static_%E6%88%90%E5%91%98\" >static \u6210\u5458<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E9%9D%99%E6%80%81%E6%88%90%E5%91%98%E5%8F%98%E9%87%8F\" >\u9759\u6001\u6210\u5458\u53d8\u91cf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E9%9D%99%E6%80%81%E6%88%90%E5%91%98%E5%87%BD%E6%95%B0\" >\u9759\u6001\u6210\u5458\u51fd\u6570<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#const_%E6%88%90%E5%91%98\" >const \u6210\u5458<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E5%B8%B8%E6%88%90%E5%91%98%E5%8F%98%E9%87%8F\" >\u5e38\u6210\u5458\u53d8\u91cf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E5%B8%B8%E6%88%90%E5%91%98%E5%87%BD%E6%95%B0\" >\u5e38\u6210\u5458\u51fd\u6570<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E5%8F%8B%E5%85%83\" >\u53cb\u5143<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E5%8F%8B%E5%85%83%E5%87%BD%E6%95%B0\" >\u53cb\u5143\u51fd\u6570<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E5%8F%8B%E5%85%83%E7%B1%BB\" >\u53cb\u5143\u7c7b<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E7%BB%A7%E6%89%BF%E4%B8%8E%E6%B4%BE%E7%94%9F\" >\u7ee7\u627f\u4e0e\u6d3e\u751f<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E6%9D%83%E9%99%90\" >\u6743\u9650<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E5%8D%95%E7%BB%A7%E6%89%BF\" >\u5355\u7ee7\u627f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E5%A4%9A%E7%BB%A7%E6%89%BF\" >\u591a\u7ee7\u627f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E5%AD%90%E7%B1%BB%E7%88%B6%E7%B1%BB%E5%90%8C%E5%90%8D%E5%8F%98%E9%87%8F\" >\u5b50\u7c7b\u7236\u7c7b\u540c\u540d\u53d8\u91cf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E8%8F%B1%E5%BD%A2%E7%BB%A7%E6%89%BF\" >\u83f1\u5f62\u7ee7\u627f<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E8%99%9A%E7%BB%A7%E6%89%BF\" >\u865a\u7ee7\u627f<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E5%A4%9A%E6%80%81\" >\u591a\u6001<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E7%BA%AF%E8%99%9A%E5%87%BD%E6%95%B0%EF%BC%88%E5%8F%8A%E7%BA%AF%E8%99%9A%E6%9E%90%E6%9E%84%EF%BC%89\" >\u7eaf\u865a\u51fd\u6570\uff08\u53ca\u7eaf\u865a\u6790\u6784\uff09<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E8%BF%90%E7%AE%97%E7%AC%A6%E9%87%8D%E8%BD%BD\" >\u8fd0\u7b97\u7b26\u91cd\u8f7d<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#_%E5%8F%B7%E9%87%8D%E8%BD%BD\" >+ \u53f7\u91cd\u8f7d<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E6%88%90%E5%91%98%E5%87%BD%E6%95%B0%E5%AE%9E%E7%8E%B0\" >\u6210\u5458\u51fd\u6570\u5b9e\u73b0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%E5%85%A8%E5%B1%80%E5%87%BD%E6%95%B0%E5%AE%9E%E7%8E%B0\" >\u5168\u5c40\u51fd\u6570\u5b9e\u73b0<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#i\" >&lt;&lt; \u91cd\u8f7d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#_%E9%87%8D%E8%BD%BD\" >++ \u91cd\u8f7d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#_%E9%87%8D%E8%BD%BD-2\" >= \u91cd\u8f7d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#%3E_%E9%87%8D%E8%BD%BD\" >&gt; \u91cd\u8f7d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/blog.iyatt.com\/?p=9028\/#_%E9%87%8D%E8%BD%BD-3\" >() \u91cd\u8f7d<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E7%8E%AF%E5%A2%83\"><\/span>\u73af\u5883<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Debian 11 \uff08arm64\uff09<\/p>\n<p>\u7f16\u8bd1\u5668 g++ 10.2.1\uff1b\u7f16\u8bd1\u6807\u51c6 C++20\uff1b\u53c2\u6570\uff1a-std=c++20 -no-pie -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Werror=format-security -Wextra -pedantic -Wimplicit-fallthrough -Wsequence-point -Wswitch-unreachable -Wswitch-enum -Wstringop-truncation -Wbool-compare -Wtautological-compare -Wfloat-equal -Wshadow=global -Wpointer-arith -Wpointer-compare -Wcast-align -Wcast-qual -Wwrite-strings -Wdangling-else -Wlogical-op -Wconversion -g -O0<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E7%B1%BB\"><\/span>\u7c7b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"class_%E5%92%8C_struct\"><\/span>class \u548c struct<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5728 C \u8bed\u8a00\u4e2d\u5e76\u6ca1\u6709 class \u8fd9\u4e2a\u5173\u952e\u8bcd\uff0c\u4f46\u662f\u6709 struct \u7ed3\u6784\u4f53\u3002C \u4e2d\u4e5f\u662f\u5b58\u5728\u9762\u5411\u5bf9\u8c61\u8bbe\u8ba1\u601d\u60f3\u7684\uff0c\u800c\u5b9e\u73b0\u8f7d\u4f53\u5c31\u662f struct\u3002<br \/>\n\u6bd4\u5982\uff0cC \u8bed\u8a00\u4e2d\u7684 FILE \u6587\u4ef6\u6307\u9488\uff0c\u901a\u8fc7 struct \u5c01\u88c5\u4e86\u6587\u4ef6\u90fd\u5177\u6709\u7684\u4e00\u4e9b\u5c5e\u6027\uff0c\u64cd\u4f5c\u6587\u4ef6\u7684\u6253\u5f00\u3001\u8bfb\u3001\u5199\u3001\u5173\u95ed\u65b9\u6cd5\u90fd\u5c01\u88c5\u4e86\u5bf9\u5e94\u7684\u51fd\u6570\u3002\u4e0d\u662f\u8bf4\u4e00\u5b9a\u8981\u663e\u5f0f\u7684\u641e\u4e2a\u4ec0\u4e48\u7c7b\u624d\u53eb\u9762\u5411\u5bf9\u8c61\uff0c\u66f4\u91cd\u8981\u7684\u662f\u8fd9\u79cd\u601d\u60f3\u3002<\/p>\n<p>C++ \u4e2d\u6709\u4e86 class\uff0c\u800c struct \u4e5f\u662f C++ \u4e2d\u7684\u7c7b\uff0c\u53ea\u662f\u5b83\u4eec\u7684\u9ed8\u8ba4\u5c5e\u6027\u4e0d\u540c\uff0cclass \u9ed8\u8ba4\u79c1\u6709\uff0cstruct \u9ed8\u8ba4\u516c\u6709\u3002<br \/>\n<img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676133614132.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 520px; --smush-placeholder-aspect-ratio: 520\/498;\" \/><br \/>\n<img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676133552499.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 400px; --smush-placeholder-aspect-ratio: 400\/432;\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E6%9E%84%E9%80%A0%E5%87%BD%E6%95%B0%E5%92%8C%E6%9E%90%E6%9E%84%E5%87%BD%E6%95%B0\"><\/span>\u6784\u9020\u51fd\u6570\u548c\u6790\u6784\u51fd\u6570<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass Person\n{\n    private: \/\/ \u79c1\u6709\uff0c\u4ec5\u5185\u90e8\u6210\u5458\u53ef\u4ee5\u8bbf\u95ee\n        std::string m_name;\n\n    public:\n        \/**\n         * @brief \u9ed8\u8ba4\u6784\u9020\u51fd\u6570\uff0c\n         *      \u5728\u5b9e\u4f8b\u5316\u5bf9\u8c61\u65f6\u81ea\u52a8\u6267\u884c\uff0c\n         *      \u4e00\u822c\u7528\u4e8e\u9ed8\u8ba4\u521d\u59cb\u5316\uff0c\n         *      \u5982\u679c\u6ca1\u6709\u5b9a\u4e49\uff0c\u7f16\u8bd1\u5668\u4e5f\u4f1a\u81ea\u52a8\u6dfb\u52a0\u4e00\u4e2a\n        *\/\n        Person();\n\n        \/**\n         * @brief \u62f7\u8d1d\u6784\u9020\u51fd\u6570\uff0c\n         *      \u8be5\u51fd\u6570\u5b9e\u73b0\u5c06\u4e00\u4e2a\u5bf9\u8c61\u7684\u5c5e\u6027\u503c\u590d\u5236\u7ed9\u53e6\u5916\u4e00\u4e2a\u540c\u7c7b\u5bf9\u8c61\uff0c\n         *      \u5982\u679c\u6ca1\u6709\u5b9a\u4e49\uff0c\u7f16\u8bd1\u5668\u4f1a\u81ea\u52a8\u6dfb\u52a0\u4e00\u4e2a\uff0c\u9ed8\u8ba4\u4e00\u4e00\u5bf9\u5e94\u62f7\u8d1d\u53d8\u91cf\u503c\n         * @param person \u62f7\u8d1d\u5bf9\u8c61\n        *\/\n        Person(const Person &amp;person);\n\n        \/**\n         * @brief \u8bbe\u7f6e\u540d\u5b57\n         * @param name \u540d\u5b57\n        *\/\n        void setName(std::string name);\n\n        \/**\n         * @brief \u83b7\u53d6\u540d\u5b57\n         * @return \u540d\u5b57\n        *\/\n        std::string getName();\n\n        \/**\n         * @brief \u6790\u6784\u51fd\u6570\uff0c\n         *      \u5728\u5b9e\u4f8b\u5bf9\u8c61\u88ab\u9500\u6bc1\u65f6\u81ea\u52a8\u6267\u884c\uff0c\n         *      \u4e00\u822c\u7528\u4e8e\u6e05\u7406\u5584\u540e\uff0c\n         *      \u5982\u679c\u6ca1\u6709\u5b9a\u4e49\uff0c\u7f16\u8bd1\u5668\u4e5f\u4f1a\u81ea\u52a8\u6dfb\u52a0\u4e00\u4e2a\n        *\/\n        ~Person();\n};\n\nPerson::Person()\n{\n    m_name = &quot;\u7a7a&quot;;\n    std::cout &lt;&lt; &quot;\u9ed8\u8ba4\u6784\u9020\u51fd\u6570&quot; &lt;&lt; std::endl;\n}\n\nPerson::Person(const Person &amp;person)\n{\n    m_name = person.m_name;\n    std::cout &lt;&lt; &quot;\u62f7\u8d1d\u6784\u9020\u51fd\u6570&quot; &lt;&lt; std::endl;\n}\n\nvoid Person::setName(std::string name)\n{\n    m_name = name;\n}\n\nstd::string Person::getName()\n{\n    return m_name;\n}\n\nPerson::~Person()\n{\n    std::cout &lt;&lt; &quot;\u6790\u6784\u51fd\u6570&quot; &lt;&lt; std::endl;\n}\n\nint main()\n{\n    Person p1; \/\/ \u9ed8\u8ba4\u6784\u9020\n    p1.setName(&quot;\u5c0f\u660e&quot;);\n\n    Person p2(p1); \/\/ \u62f7\u8d1d\u6784\u9020\n    std::cout &lt;&lt; p2.getName() &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676202244703.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 209px; --smush-placeholder-aspect-ratio: 209\/193;\" \/><\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E6%8B%B7%E8%B4%9D%E6%9E%84%E9%80%A0%E5%87%BD%E6%95%B0\"><\/span>\u62f7\u8d1d\u6784\u9020\u51fd\u6570<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u4e0a\u4e00\u4e2a\u4f8b\u5b50\u4e5f\u5b9a\u4e49\u4e86\u62f7\u8d1d\u6784\u9020\u51fd\u6570\uff0c\u5373\u4f7f\u4e0d\u5b9a\u4e49\uff0c\u7f16\u8bd1\u5668\u4e5f\u4f1a\u81ea\u52a8\u6dfb\u52a0\u3002\uff08\u7f16\u8bd1\u5668\u81ea\u52a8\u6dfb\u52a0\uff1a\u6784\u9020\u51fd\u6570\u3001\u62f7\u8d1d\u6784\u9020\u51fd\u6570\u3001\u6790\u6784\u51fd\u6570\u548c\u8d4b\u503c\u91cd\u8f7d\uff09<\/p>\n<p>\u7f16\u8bd1\u5668\u6dfb\u52a0\u7684\u62f7\u8d1d\u6784\u9020\u51fd\u6570\u662f\u6d45\u62f7\u8d1d\uff0c\u5982\u679c\u7c7b\u6210\u5458\u53d8\u91cf\u4e0d\u662f\u5b58\u50a8\u5728\u5806\u533a\u8fd8\u597d\uff0c\u5982\u679c\u662f\u7684\u8bdd\uff0c\u4f7f\u7528\u6d45\u62f7\u8d1d\u65f6\u5c31\u76f8\u5f53\u4e8e\u590d\u5236\u5730\u5740\uff0c\u7b49\u540c\u4e8e\u53e6\u8d77\u4e86\u4e00\u4e2a\u522b\u540d\u6307\u5411\u540c\u4e00\u5757\u5185\u5b58\uff0c\u5728\u6790\u6784\u91ca\u653e\u5185\u5b58\u7684\u65f6\u5019\u5c31\u6709\u53ef\u80fd\u51fa\u73b0\u91cd\u590d delete \u7684\u95ee\u9898\u3002\u6240\u4ee5\u9700\u8981\u81ea\u5df1\u5199\u6df1\u62f7\u8d1d\u6784\u9020\u51fd\u6570\u5b9e\u73b0\uff0c\u62f7\u8d1d\u65f6\u65b0\u7533\u8bf7\u4e00\u5757\u5185\u5b58\u5730\u5740\uff0c\u518d\u8d4b\u503c\u8fdb\u53bb\u3002<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass MyClass\n{\n    private:\n        int *m_num = NULL;\n\n    public:\n        MyClass()\n        {\n            m_num = new int(0);\n        }\n\n        MyClass(int num)\n        {\n            if (m_num != NULL)\n            {\n                delete m_num;\n                m_num = NULL;\n            }\n            m_num = new int(num);\n        }\n\n        int get()\n        {\n            return *m_num;\n        }\n\n        MyClass(MyClass &amp;mc)\n        {\n            m_num = new int(mc.get());\n        }\n\n        ~MyClass()\n        {\n            if (m_num != NULL)\n            {\n                delete m_num;\n                m_num = NULL;\n            }\n        }\n};\n\nint main()\n{\n    MyClass mc1(10);\n    MyClass mc2(mc1);\n    MyClass mc3 = mc1;\n\n    std::cout &lt;&lt; mc2.get() &lt;&lt; &quot; &quot; &lt;&lt; mc3.get() &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676409365492.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 165px; --smush-placeholder-aspect-ratio: 165\/92;\" \/><\/p>\n<p>\u5f53\u6211\u6ce8\u91ca\u6389\u81ea\u5b9a\u4e49\u7684\u62f7\u8d1d\u6784\u9020\u51fd\u6570\u4ee5\u540e\uff0c\u7f16\u8bd1\u8fd0\u884c\u65f6\u5c31\u4f1a\u51fa\u73b0\u9519\u8bef\uff0c\u9519\u8bef\u7684\u4f4d\u7f6e\u5c31\u5728 delete<br \/>\n<img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676409330306.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 624px; --smush-placeholder-aspect-ratio: 624\/468;\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%8C%BF%E5%90%8D%E5%AF%B9%E8%B1%A1\"><\/span>\u533f\u540d\u5bf9\u8c61<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u901a\u8fc7 \u201c\u7c7b\u540d()\u201d \u65b9\u5f0f\u4f7f\u7528\uff0c\u800c\u4e0d\u5b9e\u4f8b\u5316\u5bf9\u8c61\u540d\uff0c\u8fd9\u79cd\u65b9\u5f0f\u4f7f\u7528\u8c03\u7528\u5b8c\u5f53\u524d\u8bed\u53e5\u7a7a\u95f4\u5c31\u4f1a\u88ab\u91ca\u653e\uff0c\u5373\u4e3a\u533f\u540d\u5bf9\u8c61\u3002<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass MyClass\n{\n    public:\n        void print(std::string s)\n        {\n            std::cout &lt;&lt; s &lt;&lt; std::endl;\n        }\n};\n\nint main()\n{\n    MyClass().print(&quot;Hello world\uff01&quot;); \/\/ \u533f\u540d\u5bf9\u8c61\n\n    MyClass mc;\n    mc.print(&quot;\u4f60\u597d\uff0c\u4e16\u754c\uff01&quot;);\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676561612451.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 197px; --smush-placeholder-aspect-ratio: 197\/142;\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"static_%E6%88%90%E5%91%98\"><\/span>static \u6210\u5458<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"%E9%9D%99%E6%80%81%E6%88%90%E5%91%98%E5%8F%98%E9%87%8F\"><\/span>\u9759\u6001\u6210\u5458\u53d8\u91cf<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u9759\u6001\u6210\u5458\u53d8\u91cf\u4e0d\u7ba1\u6709\u591a\u5c11\u4e2a\u5bf9\u8c61\uff0c\u5b9e\u9645\u5728\u5185\u5b58\u4e2d\u53ea\u6709\u4e00\u4efd\uff0c\u5728\u7f16\u8bd1\u7684\u65f6\u5019\u5c31\u7ed9\u5206\u914d\u597d\u4e86\u5185\u5b58\u7a7a\u95f4\u3002\u5373\u4f7f\u6ca1\u6709\u5b9e\u4f8b\u5316\u7684\u5bf9\u8c61\uff08\u5982\u679c\u662f\u516c\u5f00\u7684\u6210\u5458\u7684\u8bdd\uff09\uff0c\u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7 \u7c7b\u578b::\u53d8\u91cf\u540d \u8fdb\u884c\u4f7f\u7528\uff0c\u5982\u679c\u6709\u5b9e\u4f8b\u7684\u5bf9\u8c61\u7684\u8bdd\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7 \u5bf9\u8c61\u540d::\u53d8\u91cf\u540d \u4f7f\u7528\uff0c\u5b83\u4eec\u5b9e\u9645\u90fd\u662f\u5bf9\u540c\u4e00\u4e2a\u53d8\u91cf\u8fdb\u884c\u64cd\u4f5c\uff0c\u5373\u5171\u7528\u4e00\u4e2a\u53d8\u91cf\u3002<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass ClassName\n{\n    private:\n        static int m_num1;\n\n    public:\n        static int m_num2;\n\n        void setNum(int num);\n        int getNum();\n};\n\n\/\/ \u9759\u6001\u53d8\u91cf\u5728\u7c7b\u5916\u521d\u59cb\u5316\nint ClassName::m_num1 = 0;\nint ClassName::m_num2 = 0;\n\nvoid ClassName::setNum(int num) \/\/ \u5199\u79c1\u6709\u6210\u5458\n{\n    m_num1 = num;\n}\n\nint ClassName::getNum() \/\/ \u8bfb\u79c1\u6709\u6210\u5458\n{\n    return m_num1;\n}\n\nint main()\n{\n    ClassName c1;\n    c1.setNum(77);\n    c1.m_num2 = 99;\n\n    ClassName c2;\n    std::cout &lt;&lt; &quot;c2.m_num1\uff1a&quot; &lt;&lt; c2.getNum() &lt;&lt; &quot;\\nc2.m_num2\uff1a&quot; &lt;&lt; c2.m_num2 &lt;&lt; &quot;\\nClassName::m_num2\uff1a&quot; &lt;&lt; ClassName::m_num2 &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676263385237.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 245px; --smush-placeholder-aspect-ratio: 245\/178;\" \/><\/p>\n<p>\u4e0a\u9762\u7684\u4f8b\u5b50\uff0c\u6211\u5b9e\u4f8b\u5316\u4e86\u4e00\u4e2a c1\uff0c\u5e76\u901a\u8fc7 c1 \u4e3a\u9759\u6001\u6210\u5458\u53d8\u91cf\u8bbe\u7f6e\u4e86\u503c\u3002\u7136\u540e\u53c8\u5b9e\u4f8b\u5316\u4e86\u4e00\u4e2a\u5bf9\u8c61 c2\uff0c\u901a\u8fc7 c2 \u83b7\u53d6\u9759\u6001\u6210\u5458\u53d8\u91cf\u7684\u503c\u5c31\u662f\u524d\u9762\u901a\u8fc7 c1 \u8bbe\u7f6e\u7684\u3002\u4f7f\u7528\u7c7b\u540d\u4e5f\u53ef\u4ee5\u76f4\u63a5\u8bfb\u53d6\u524d\u9762\u8bbe\u7f6e\u7684\u516c\u5f00\u9759\u6001\u6210\u5458\u53d8\u91cf\u3002<\/p>\n<p>\u4e0b\u9762\u53c8\u4e00\u4e2a\u4f8b\u5b50\uff0c\u6df1\u5165\u5206\u6790\u9759\u6001\u6210\u5458\u53d8\u91cf<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass C1\n{\n    static int num1;\n    int num2;\n};\n\nclass C2\n{\n    int num1;\n    int num2;\n};\n\nint main()\n{\n    C1 c1;\n    C2 c2;\n\n    std::cout &lt;&lt; &quot;int &quot; &lt;&lt; sizeof(int) &lt;&lt; std::endl;\n    std::cout &lt;&lt; &quot;C1 &quot; &lt;&lt; sizeof(C1) &lt;&lt; &quot; c1 &quot; &lt;&lt; sizeof(c1) &lt;&lt; std::endl;\n    std::cout &lt;&lt; &quot;C2 &quot; &lt;&lt; sizeof(C2) &lt;&lt; &quot; c2 &quot; &lt;&lt; sizeof(c2) &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676273084360.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 145px; --smush-placeholder-aspect-ratio: 145\/125;\" \/><\/p>\n<p>int 4 \u5b57\u8282\uff0cC1 \u7c7b\u4e2d\u4e00\u4e2a\u9759\u6001\u53d8\u91cf\uff0c\u4e00\u4e2a\u666e\u901a\u53d8\u91cf\uff0c\u603b\u5927\u5c0f\u4e3a 4 \u5b57\u8282 \uff0c\u4e0e\u4e4b\u5bf9\u6bd4\u7684 C2 \u7c7b\u4e2d\u662f\u4e24\u4e2a\u666e\u901a\u53d8\u91cf\uff0c\u603b\u5927\u5c0f\u4e3a 8 \u5b57\u8282\u3002<br \/>\n\u5219\u8bf4\u660e\u9759\u6001\u53d8\u91cf\u5b9e\u9645\u5e76\u4e0d\u5728\u7c7b\u4e2d\uff0c\u662f\u72ec\u7acb\u4e8e\u7c7b\u5f00\u8f9f\u7684\u50a8\u5b58\u7a7a\u95f4\u3002\u5e94\u8be5\u662f\u548c\u666e\u901a\u9759\u6001\u53d8\u91cf\u4e00\u6837\uff0c\u90fd\u662f\u5b58\u653e\u5728\u5168\u5c40\u6570\u636e\u533a\uff0c\u548c\u5168\u5c40\u53d8\u91cf\u4e00\u6837\uff0c\u7f16\u8bd1\u7684\u65f6\u5019\u5c31\u5df2\u7ecf\u5206\u914d\u597d\u4e86\u5185\u5b58\u7a7a\u95f4\uff0c\u800c\u4e0d\u662f\u8fd0\u884c\u5230\u5b9a\u4e49\u7684\u5730\u65b9\u624d\u5206\u914d\u3002\u6240\u4ee5\u5373\u4f7f\u6ca1\u6709\u5b9e\u4f8b\u5316\u5bf9\u8c61\u4e5f\u80fd\u5bf9\u5b83\u8fdb\u884c\u64cd\u4f5c\uff0c\u53ea\u662f\u88ab\u6302\u5230\u7c7b\u4e0a\u8fdb\u884c\u4f7f\u7528\uff0c\u5bf9\u5b83\u7684\u64cd\u4f5c\u5f88\u591a\u65f6\u5019\u5c31\u548c\u975e\u6210\u5458\u53d8\u91cf\u5dee\u4e0d\u591a\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E9%9D%99%E6%80%81%E6%88%90%E5%91%98%E5%87%BD%E6%95%B0\"><\/span>\u9759\u6001\u6210\u5458\u51fd\u6570<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u9759\u6001\u6210\u5458\u51fd\u6570\u4e0d\u80fd\u8bbf\u95ee\u7c7b\u4e2d\u7684\u53d8\u91cf\uff0c\u53ef\u4ee5\u901a\u8fc7\u7c7b\u540d\u8c03\u7528\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u5b9e\u4f8b\u5bf9\u8c61\u8c03\u7528\u3002<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass ClassName\n{\n    public:\n        static void fun1();\n};\n\nvoid ClassName::fun1()\n{\n    std::cout &lt;&lt; &quot;\u9759\u6001\u6210\u5458\u51fd\u6570&quot; &lt;&lt; std::endl;\n}\n\nint main()\n{\n    ClassName c;\n    c.fun1();\n\n    ClassName::fun1();\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676263901327.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 150px; --smush-placeholder-aspect-ratio: 150\/68;\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"const_%E6%88%90%E5%91%98\"><\/span>const \u6210\u5458<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"%E5%B8%B8%E6%88%90%E5%91%98%E5%8F%98%E9%87%8F\"><\/span>\u5e38\u6210\u5458\u53d8\u91cf<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u4f7f\u7528 const \u4fee\u9970\u7684\u53d8\u91cf\u53ea\u80fd\u521d\u59cb\u5316\u4e00\u6b21\uff0c\u4e0d\u80fd\u4fee\u6539\u503c\u3002\u82e5\u8981\u5bf9\u5e38\u6210\u5458\u53d8\u91cf\u521d\u59cb\u5316\u4e3a\u6307\u5b9a\u503c\uff0c\u5c31\u53ea\u80fd\u901a\u8fc7\u6784\u9020\u51fd\u6570\u53c2\u6570\u521d\u59cb\u5316\u5217\u8868\u8fdb\u884c<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass ClassName\n{\n    private:\n        const int m_num1;\n\n    public:\n        const int  m_num2;\n\n        ClassName(int num1, int num2);\n        int getNum1();\n};\n\nClassName::ClassName(int num1, int num2) : m_num1(num1), m_num2(num2)\n{\n    ;\n}\n\nint ClassName::getNum1()\n{\n    return m_num1;\n}\n\nint main()\n{\n    ClassName c(1, 2);\n    std::cout &lt;&lt; &quot;m_num1=&quot; &lt;&lt; c.getNum1() &lt;&lt; &quot;\\n&quot; &lt;&lt; &quot;m_num2=&quot; &lt;&lt; c.m_num2 &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676271691441.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 124px; --smush-placeholder-aspect-ratio: 124\/89;\" \/><\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E5%B8%B8%E6%88%90%E5%91%98%E5%87%BD%E6%95%B0\"><\/span>\u5e38\u6210\u5458\u51fd\u6570<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u5e38\u6210\u5458\u51fd\u6570\u5185\u90e8\u53ef\u4ee5\u8bfb\u6210\u5458\u53d8\u91cf\u503c\uff0c\u4f46\u662f\u65e0\u6cd5\u5411\u6210\u5458\u53d8\u91cf\u5199\u5165\uff0c\u5373\u6210\u5458\u53d8\u91cf\u5728\u5e38\u6210\u5458\u51fd\u6570\u5185\u90e8\u5177\u6709\u53ea\u8bfb\u5c5e\u6027\u3002<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass ClassName\n{\n    private:\n        int m_num;\n\n    public:\n        void fun() const;\n};\n\nvoid ClassName::fun() const\n{\n    m_num = 1;\n}\n\nint main()\n{\n\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676272053469.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 679px; --smush-placeholder-aspect-ratio: 679\/338;\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%8F%8B%E5%85%83\"><\/span>\u53cb\u5143<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"%E5%8F%8B%E5%85%83%E5%87%BD%E6%95%B0\"><\/span>\u53cb\u5143\u51fd\u6570<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u5728\u7c7b\u4e2d\u4f7f\u7528 friend \u58f0\u660e\u4e00\u4e2a\u975e\u6210\u5458\u51fd\u6570\u540e\uff0c\u8be5\u51fd\u6570\u5c31\u53ef\u4ee5\u8bbf\u95ee\u8be5\u7c7b\u7684\u79c1\u6709\u6210\u5458\u4e86<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass ClassName\n{\n    private:\n        int m_num;\n        friend int getNum(ClassName c);\n\n    public:\n        ClassName();\n};\n\nClassName::ClassName()\n{\n    m_num = 6;\n}\n\nint getNum(ClassName c)\n{\n    return c.m_num;\n}\n\nint main()\n{\n    ClassName c;\n    std::cout &lt;&lt; getNum(c) &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676285108588.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 118px; --smush-placeholder-aspect-ratio: 118\/89;\" \/><\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E5%8F%8B%E5%85%83%E7%B1%BB\"><\/span>\u53cb\u5143\u7c7b<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u5728\u4e00\u4e2a\u7c7b\u4e2d\u58f0\u660e\u53e6\u5916\u4e00\u4e2a\u7c7b\u4e3a\u53cb\u5143\uff0c\u5219\u88ab\u58f0\u660e\u7684\u7c7b\u4e2d\u53ef\u4ee5\u4f7f\u7528\u58f0\u660e\u8005\u7684\u79c1\u6709\u6210\u5458<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass A\n{\n    private:\n        int numA;\n\n    public:\n        friend class B;\n        A();\n};\n\nA::A()\n{\n    numA = 1;\n}\n\nclass B\n{\n    private:\n        int numB;\n\n    public:\n        friend class C;\n        B();\n        int get(A a);\n};\n\nB::B()\n{\n    numB = 2;\n}\n\nint B::get(A a)\n{\n    return a.numA;\n}\n\nclass C\n{\n    public:\n        int get(B b);\n};\n\nint C::get(B b)\n{\n    return b.numB;\n}\n\nint main()\n{\n    A a;\n    B b;\n    C c;\n\n    std::cout &lt;&lt; b.get(a) &lt;&lt; std::endl;\n    std::cout &lt;&lt; c.get(b) &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p>\u8fd9\u91cc\u6709\u4e09\u4e2a\u7c7b\uff0c\u5206\u522b\u4e3a A\u3001B \u548c C\u3002A \u4e2d\u6709\u79c1\u6709\u53d8\u91cf numA \u521d\u59cb\u5316\u4e3a 1\uff0cB \u4e2d\u6709\u79c1\u6709\u53d8\u91cf numB \u521d\u59cb\u5316\u4e3a 2\u3002A \u7c7b\u4e2d\u58f0\u660e B \u4e3a\u53cb\u5143\u7c7b\uff0cB \u7c7b\u4e2d\u58f0\u660e C \u4e3a\u53cb\u5143\u7c7b\u3002\u5219 C \u7c7b\u53ef\u4ee5\u4f7f\u7528 B \u7c7b\u7684\u79c1\u6709\u6210\u5458\uff0cB \u7c7b\u53ef\u4ee5\u4f7f\u7528 A \u7c7b\u7684\u79c1\u6709\u6210\u5458\u3002<\/p>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676288143604.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 134px; --smush-placeholder-aspect-ratio: 134\/126;\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E7%BB%A7%E6%89%BF%E4%B8%8E%E6%B4%BE%E7%94%9F\"><\/span>\u7ee7\u627f\u4e0e\u6d3e\u751f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4e00\u4e2a\u7c7b\u7ee7\u627f\u53e6\u5916\u4e00\u4e2a\u7c7b\u540e\uff0c\u5c31\u53ef\u4ee5\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u4f7f\u7528\u5b83\u7684\u6210\u5458\u3002\u4e00\u822c\u7528\u4e8e\u6269\u5145\u529f\u80fd\uff0c\u7236\u7c7b\u5b9e\u73b0\u4e86\u4e00\u4e9b\u529f\u80fd\uff0c\u5b50\u7c7b\u7ee7\u627f\u7236\u7c7b\u7ee7\u7eed\u6dfb\u52a0\u65b0\u529f\u80fd\u3002<br \/>\n\u4e24\u8005\u7684\u79f0\u547c\u4e00\u822c\u6709\u4e24\u5957<br \/>\n\u82e5 B \u4ece A \u7ee7\u627f<\/p>\n<table>\n<thead>\n<tr>\n<th>A<\/th>\n<th>B<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u7236\u7c7b<\/td>\n<td>\u5b50\u7c7b<\/td>\n<\/tr>\n<tr>\n<td>\u57fa\u7c7b<\/td>\n<td>\u6d3e\u751f\u7c7b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"%E6%9D%83%E9%99%90\"><\/span>\u6743\u9650<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u7c7b\u7684\u6743\u9650\u6709\u4e09\u79cd\uff1a<\/p>\n<ul>\n<li>public \u516c\u6709\uff1a\u7c7b\u5185\u3001\u7c7b\u5916\u548c\u5b50\u7c7b\u90fd\u53ef\u8bbf\u95ee<\/li>\n<li>private \u79c1\u6709\uff1a\u4ec5\u7c7b\u5185\u53ef\u4ee5\u8bbf\u95ee<\/li>\n<li>protected \u4fdd\u62a4\uff1a\u7c7b\u5185\u548c\u5b50\u7c7b\u53ef\u4ee5\u8bbf\u95ee<\/li>\n<\/ul>\n<p>\u7ee7\u627f\u540e\u7684\u6743\u9650<\/p>\n<table>\n<thead>\n<tr>\n<th>\u7236\u7c7b\u6743\u9650 \\ \u7ee7\u627f\u6743\u9650<\/th>\n<th>public<\/th>\n<th>private<\/th>\n<th>protected<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>public<\/td>\n<td>public<\/td>\n<td>private<\/td>\n<td>protected<\/td>\n<\/tr>\n<tr>\n<td>private<\/td>\n<td>\u4e0d\u53ef\u8bbf\u95ee<\/td>\n<td>\u4e0d\u53ef\u8bbf\u95ee<\/td>\n<td>\u4e0d\u53ef\u8bbf\u95ee<\/td>\n<\/tr>\n<tr>\n<td>protected<\/td>\n<td>protected<\/td>\n<td>private<\/td>\n<td>protected<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6743\u9650\u4e25\u683c\u7a0b\u5ea6\uff1aprivate &gt; protected &gt; public\uff0c\u54ea\u4e2a\u4e25\u683c\uff0c\u7ee7\u627f\u540e\u5c31\u662f\u54ea\u79cd\u6743\u9650\uff0c\u7236\u7c7b\u4e3a\u79c1\u6709\u7684\u5c31\u5b8c\u5168\u4e0d\u80fd\u7ee7\u627f\u7ed9\u5b50\u7c7b\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%8D%95%E7%BB%A7%E6%89%BF\"><\/span>\u5355\u7ee7\u627f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e00\u4e2a\u5b50\u7c7b\u53ea\u7ee7\u627f\u4e00\u4e2a\u7236\u7c7b\u3002\u8fd9\u91cc\u5199\u4e00\u4e2a\u591a\u7ea7\u7ee7\u627f\u7684\u4f8b\u5b50\uff0cB \u4ece A \u7ee7\u627f\uff0cC \u4ece B \u7ee7\u627f\uff0c\u5373 A-&gt;B-&gt;C<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass A\n{\n    public:\n        A()\n        {\n            std::cout &lt;&lt; &quot;A \u6784\u9020\u51fd\u6570&quot; &lt;&lt; std::endl;\n        }\n\n        ~A()\n        {\n            std::cout &lt;&lt; &quot;A \u6790\u6784\u51fd\u6570&quot; &lt;&lt; std::endl;\n        }\n};\n\nclass B : public A \/\/ \u4ece A \u7ee7\u627f\n{\n    public:\n        B()\n        {\n            std::cout &lt;&lt; &quot;B \u6784\u9020\u51fd\u6570&quot; &lt;&lt; std::endl;\n        }\n\n        ~B()\n        {\n            std::cout &lt;&lt; &quot;B \u6790\u6784\u51fd\u6570&quot; &lt;&lt; std::endl;\n        }\n};\n\nclass C : public B \/\/ \u4ece B \u7ee7\u627f\n{\n    public:\n        C()\n        {\n            std::cout &lt;&lt; &quot;C \u6784\u9020\u51fd\u6570&quot; &lt;&lt; std::endl;\n        }\n\n        ~C()\n        {\n            std::cout &lt;&lt; &quot;C \u6790\u6784\u51fd\u6570&quot; &lt;&lt; std::endl;\n        }\n};\n\nint main()\n{\n    C c;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676296713496.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 159px; --smush-placeholder-aspect-ratio: 159\/167;\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%A4%9A%E7%BB%A7%E6%89%BF\"><\/span>\u591a\u7ee7\u627f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e00\u4e2a\u5b50\u7c7b\u7ee7\u627f\u591a\u4e2a\u7236\u7c7b\u3002\u8fd9\u91cc\u5199\u4e00\u4e2a\u4f8b\u5b50 C \u4ece A \u548c B \u7ee7\u627f<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass A\n{\n    public:\n        A()\n        {\n            std::cout &lt;&lt; &quot;A \u6784\u9020\u51fd\u6570&quot; &lt;&lt; std::endl;\n        }\n\n        ~A()\n        {\n            std::cout &lt;&lt; &quot;A \u6790\u6784\u51fd\u6570&quot; &lt;&lt; std::endl;\n        }\n};\n\nclass B\n{\n    public:\n        B()\n        {\n            std::cout &lt;&lt; &quot;B \u6784\u9020\u51fd\u6570&quot; &lt;&lt; std::endl;\n        }\n\n        ~B()\n        {\n            std::cout &lt;&lt; &quot;B \u6790\u6784\u51fd\u6570&quot; &lt;&lt; std::endl;\n        }\n};\n\nclass C : public A, public B \/\/ \u4ece A \u548c B \u7ee7\u627f\n{\n    public:\n        C()\n        {\n            std::cout &lt;&lt; &quot;C \u6784\u9020\u51fd\u6570&quot; &lt;&lt; std::endl;\n        }\n\n        ~C()\n        {\n            std::cout &lt;&lt; &quot;C \u6790\u6784\u51fd\u6570&quot; &lt;&lt; std::endl;\n        }\n};\n\nint main()\n{\n    C c;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676299563937.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 183px; --smush-placeholder-aspect-ratio: 183\/185;\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AD%90%E7%B1%BB%E7%88%B6%E7%B1%BB%E5%90%8C%E5%90%8D%E5%8F%98%E9%87%8F\"><\/span>\u5b50\u7c7b\u7236\u7c7b\u540c\u540d\u53d8\u91cf<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u7236\u7c7b\u53d8\u91cf\u548c\u5b50\u7c7b\u540c\u540d\u65f6\uff0c\u9ed8\u8ba4\u4f7f\u7528\u5b50\u7c7b\u7684\uff0c\u8bbf\u95ee\u7236\u7c7b\u7684\u9700\u8981\u6307\u5b9a\u4f5c\u7528\u57df<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass A\n{\n    public:\n        int num;\n\n        int getA()\n        {\n            return num;\n        }\n};\n\nclass B\n{\n    public:\n        int num;\n\n        int getB()\n        {\n            return num;\n        }\n};\n\nclass C : public A, public B\n{\n    public:\n        int num;\n\n        int getC()\n        {\n            return num;\n        }\n};\n\nint main()\n{\n    C c;\n    c.num = 10;\n    c.A::num = 9;\n    c.B::num = 8;\n\n    std::cout &lt;&lt; c.getA() &lt;&lt; &quot; &quot; &lt;&lt; c.getB() &lt;&lt; &quot; &quot; &lt;&lt; c.getC() &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676301253905.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 178px; --smush-placeholder-aspect-ratio: 178\/118;\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E8%8F%B1%E5%BD%A2%E7%BB%A7%E6%89%BF\"><\/span>\u83f1\u5f62\u7ee7\u627f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676304567663.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 402px; --smush-placeholder-aspect-ratio: 402\/358;\" \/><\/p>\n<p>\u5982\u56fe\u4e2d\uff0cA \u6709\u4e00\u4e2a\u53d8\u91cf n\uff0c\u5206\u522b\u7ee7\u627f\u7ed9 A1 \u548c A2\uff0cAA \u53c8\u4ece A1 \u548c A2 \u7ee7\u627f\uff0c\u5219 AA \u4e2d\u4f1a\u5206\u522b\u6709\u6765\u81ea A1 \u548c A2 \u7684\u4e24\u4e2a n\u3002\u4f46\u662f\u5b9e\u9645\u53ea\u9700\u8981\u4f7f\u7528\u4e00\u4e2a n\uff0c\u8fd9\u6837\u91cd\u590d\u5c31\u4f1a\u6d6a\u8d39\u5185\u5b58\u8d44\u6e90\u3002<br \/>\n\u8fd9\u91cc\u7528\u4ee3\u7801\u590d\u73b0\u4e00\u4e0b\u4e0a\u56fe\u7684\u83f1\u5f62\u7ee7\u627f<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass A\n{\n    public:\n        int n;\n};\n\nclass A1 : public A\n{\n};\n\nclass A2 : public A\n{\n};\n\nclass AA : public A1, public A2\n{\n};\n\nint main()\n{\n    AA aa;\n    aa.A1::n = 1;\n    aa.A2::n = 2;\n    std::cout &lt;&lt; aa.A1::n &lt;&lt; &quot; &quot; &lt;&lt; aa.A2::n &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676304933099.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 179px; --smush-placeholder-aspect-ratio: 179\/108;\" \/><\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E8%99%9A%E7%BB%A7%E6%89%BF\"><\/span>\u865a\u7ee7\u627f<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u800c\u901a\u8fc7\u865a\u7ee7\u627f\u5c31\u53ef\u4ee5\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u5728 A1 \u4ece A \u7ee7\u627f\u548c A2 \u4ece A \u7ee7\u627f\u65f6\u90fd\u4f7f\u7528 virtual \u4fee\u9970\uff0c\u90a3\u4e48\u6700\u7ec8\u7ee7\u627f\u5230 AA \u65f6\uff0c\u6700\u7ec8\u53ea\u4f1a\u5206\u914d\u4e00\u4e2a n\u3002<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass A\n{\n    public:\n        int n;\n};\n\nclass A1 : virtual public A\n{\n};\n\nclass A2 : virtual public A\n{\n};\n\nclass AA : public A1, public A2\n{\n};\n\nint main()\n{\n    AA aa;\n    aa.A1::n = 1;\n    std::cout &lt;&lt; aa.n &lt;&lt; std::endl;\n    aa.A2::n = 2;\n    std::cout &lt;&lt; aa.n &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676305107187.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 152px; --smush-placeholder-aspect-ratio: 152\/129;\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%A4%9A%E6%80%81\"><\/span>\u591a\u6001<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u591a\u6001\u5206\u4e3a\u9759\u6001\u591a\u6001\u548c\u52a8\u6001\u591a\u6001\u3002\u9759\u6001\u591a\u6001\u5728\u7f16\u8bd1\u65f6\u5c31\u786e\u5b9a\u4e86\u51fd\u6570\u5730\u5740\uff0c\u6bd4\u5982\u51fd\u6570\u91cd\u8f7d\u548c\u8fd0\u7b97\u7b26\u91cd\u8f7d\uff0c\u590d\u7528\u540d\u5b57\uff0c\u4f46\u662f\u7f16\u8bd1\u65f6\u5c31\u786e\u5b9a\u4e86\u8981\u8c03\u7528\u7684\u662f\u8c01\uff1b\u800c\u52a8\u6001\u591a\u6001\uff0c\u5219\u662f\u5728\u8fd0\u884c\u65f6\u624d\u786e\u5b9a\u51fd\u6570\u5730\u5740\uff0c\u6bd4\u5982\u6d3e\u751f\u7c7b\u548c\u865a\u51fd\u6570\u5b9e\u73b0\u7684\u8fd0\u884c\u65f6\u591a\u6001\u3002<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass Person\n{\n    public:\n        void speak()\n        {\n            std::cout &lt;&lt; &quot;\u8bf4\u8bdd&quot; &lt;&lt; std::endl;\n        }\n};\n\nclass Xiaoming : public Person\n{\n    public:\n        void speak()\n        {\n            std::cout &lt;&lt; &quot;\u5c0f\u660e\u8bf4\u8bdd&quot; &lt;&lt; std::endl;\n        }\n};\n\nclass Xiaohong : public Person\n{\n    public:\n        void speak()\n        {\n            std::cout &lt;&lt; &quot;\u5c0f\u7ea2\u8bf4\u8bdd&quot; &lt;&lt; std::endl;\n        }\n};\n\nint main()\n{\n    Xiaoming xm;\n    Xiaohong xh;\n    Person &amp;p1 = xm;\n    Person &amp;p2 = xh;\n\n    p1.speak();\n    p2.speak();\n\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676356581989.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 140px; --smush-placeholder-aspect-ratio: 140\/132;\" \/><\/p>\n<p>\u5c3d\u7ba1\u6307\u5411\u7684\u662f\u4e24\u4e2a\u5b50\u7c7b\uff0c\u4f46\u662f\u5b9e\u9645\u6267\u884c\u7684\u8fd8\u662f\u7236\u7c7b\u7684\u51fd\u6570\uff0c\u8fd9\u662f\u56e0\u4e3a\u7f16\u8bd1\u7684\u65f6\u5019\u786e\u5b9a\u4e86\u8c03\u7528\u51fd\u6570\u7684\u5730\u5740\u3002<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass Person\n{\n    public:\n        virtual void speak()\n        {\n            std::cout &lt;&lt; &quot;\u8bf4\u8bdd&quot; &lt;&lt; std::endl;\n        }\n\n        virtual ~Person()\n        {\n        }\n};\n\nclass Xiaoming : public Person\n{\n    public:\n        void speak()\n        {\n            std::cout &lt;&lt; &quot;\u5c0f\u660e\u8bf4\u8bdd&quot; &lt;&lt; std::endl;\n        }\n};\n\nclass Xiaohong : public Person\n{\n    public:\n        void speak()\n        {\n            std::cout &lt;&lt; &quot;\u5c0f\u7ea2\u8bf4\u8bdd&quot; &lt;&lt; std::endl;\n        }\n};\n\nint main()\n{\n    Xiaoming xm;\n    Xiaohong xh;\n    Person &amp;p1 = xm;\n    Person &amp;p2 = xh;\n\n    p1.speak();\n    p2.speak();\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676356780121.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 148px; --smush-placeholder-aspect-ratio: 148\/114;\" \/><\/p>\n<p>\u901a\u8fc7 virtual \u4fee\u9970\u51fd\u6570\u540e\uff08\u6790\u6784\u51fd\u6570\u4e5f\u8981\uff09\uff0c\u5219\u505a\u5230\u52a8\u6001\u591a\u6001\uff0c\u8fd0\u884c\u65f6\u786e\u5b9a\u6307\u5411\u7684\u51fd\u6570\u5730\u5740\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E7%BA%AF%E8%99%9A%E5%87%BD%E6%95%B0%EF%BC%88%E5%8F%8A%E7%BA%AF%E8%99%9A%E6%9E%90%E6%9E%84%EF%BC%89\"><\/span>\u7eaf\u865a\u51fd\u6570\uff08\u53ca\u7eaf\u865a\u6790\u6784\uff09<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u524d\u9762\u5199\u7684\u4f8b\u5b50\u7684\u65f6\u5019\uff0c\u7236\u7c7b\u7684\u51fd\u6570\u4e5f\u7ed9\u4e86\u5b9a\u4e49\uff0c\u4f46\u662f\u5b9e\u9645\u6211\u4eec\u901a\u5e38\u5e0c\u671b\u7684\u662f\u901a\u8fc7\u5b50\u7c7b\u6765\u5b9e\u73b0\u5177\u4f53\u7684\u529f\u80fd\uff0c\u7236\u7c7b\u4e0d\u9700\u8981\u5b9e\u73b0\uff0c\u6b64\u65f6\u5c31\u53ef\u4ee5\u7528\u5230\u7eaf\u865a\u51fd\u6570\uff0c\u76f4\u63a5\u5728\u540e\u9762\u5199\u4e0a \u201c= 0\u201d \u5c31\u884c\u3002<br \/>\n\u53e6\u5916\u5b58\u5728\u7eaf\u865a\u51fd\u6570\u7684\u7c7b\u4e3a\u62bd\u8c61\u7c7b\uff0c\u65e0\u6cd5\u5b9e\u4f8b\u5316\u5bf9\u8c61\u3002<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass Person\n{\n    public:\n        virtual void speak() = 0; \/\/ \u7eaf\u865a\u51fd\u6570\n        virtual ~Person() = 0; \/\/ \u7eaf\u865a\u6790\u6784\n};\n\nPerson::~Person() {} \/\/ \u7eaf\u865a\u6790\u6784\u4e5f\u5fc5\u987b\u8981\u5b9a\u4e49\u51fd\u6570\u5b9e\u4f53\n\nclass Xiaoming : public Person\n{\n    private:\n        std::string *s;\n\n    public:\n        Xiaoming()\n        {\n            s = new std::string(&quot;\u5c0f\u660e&quot;);\n            std::cout &lt;&lt; &quot;\u5c0f\u660e\u6784\u9020&quot; &lt;&lt; std::endl;\n        }\n\n        void speak()\n        {\n            std::cout &lt;&lt; *s &lt;&lt; std::endl;\n        }\n\n        ~Xiaoming()\n        {\n            delete s;\n            std::cout &lt;&lt; &quot;\u5c0f\u660e\u6790\u6784&quot; &lt;&lt; std::endl;\n        }\n};\n\nclass Xiaohong : public Person\n{\n    private:\n        std::string *s;\n\n    public:\n        Xiaohong()\n        {\n            s = new std::string(&quot;\u5c0f\u7ea2&quot;);\n            std::cout &lt;&lt; &quot;\u5c0f\u7ea2\u6784\u9020&quot; &lt;&lt; std::endl;\n        }\n\n        void speak()\n        {\n            std::cout &lt;&lt; *s &lt;&lt; std::endl;\n        }\n\n        ~Xiaohong()\n        {\n            delete s;\n            std::cout &lt;&lt; &quot;\u5c0f\u7ea2\u6790\u6784&quot; &lt;&lt; std::endl;\n        }\n};\n\nint main()\n{\n    Person *p = new Xiaoming;\n    p-&gt;speak();\n    delete p;\n\n    p = new Xiaohong;\n    p-&gt;speak();\n    delete p;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676361115565.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 161px; --smush-placeholder-aspect-ratio: 161\/155;\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E8%BF%90%E7%AE%97%E7%AC%A6%E9%87%8D%E8%BD%BD\"><\/span>\u8fd0\u7b97\u7b26\u91cd\u8f7d<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4e0b\u9762\u53ea\u4e3e\u90e8\u5206\u4f8b\u5b50\u7528\u4f5c\u53c2\u8003<\/p>\n<h3><span class=\"ez-toc-section\" id=\"_%E5%8F%B7%E9%87%8D%E8%BD%BD\"><\/span>+ \u53f7\u91cd\u8f7d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u8fd9\u91cc\u5199\u4e86\u4e00\u4e2a\u4f8b\u5b50\uff0c\u7c7b\u4e2d\u6709\u4e24\u4e2a\u6570\uff0c\u901a\u8fc7\u5bf9\u4e24\u4e2a\u5b9e\u4f8b\u5bf9\u8c61\u76f8\u52a0\uff0c\u5b9e\u73b0\u4e24\u4e2a\u5bf9\u8c61\u7684\u4e24\u4e2a\u5bf9\u5e94\u6570\u5b57\u76f8\u52a0\u3002C++ \u4e2d\u539f\u751f\u7684 + \u53f7\u5e76\u4e0d\u80fd\u76f4\u63a5\u6ee1\u8db3\u8fd9\u91cc\u7684\u8981\u6c42\uff0c\u5c31\u9700\u8981\u81ea\u884c\u91cd\u5199\u4e00\u4e2a + \u53f7\u7684\u529f\u80fd\u6ee1\u8db3\u8fd9\u91cc\u7684\u6761\u4ef6\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E6%88%90%E5%91%98%E5%87%BD%E6%95%B0%E5%AE%9E%E7%8E%B0\"><\/span>\u6210\u5458\u51fd\u6570\u5b9e\u73b0<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass MyClass\n{\n    private:\n        int m_num1;\n        int m_num2;\n\n    public:\n        MyClass()\n        {\n            m_num1 = 0;\n            m_num2 = 0;\n        }\n\n        void set1(int num)\n        {\n            m_num1 = num;\n        }\n\n        void set2(int num)\n        {\n            m_num2 = num;\n        }\n\n        int get1()\n        {\n            return m_num1;\n        }\n\n        int get2()\n        {\n            return m_num2;\n        }\n\n        MyClass operator+(MyClass &amp;mc)\n        {\n            MyClass tmp;\n            tmp.set1(m_num1 + mc.get1());\n            tmp.set2(m_num2 + mc.get2());\n            return tmp;\n        }\n};\n\nint main()\n{\n    MyClass a, b, c;\n    a.set1(1);\n    a.set2(2);\n    b.set1(3);\n    b.set2(5);\n\n    \/\/ c = a.operator+(b); \/\/ \u672c\u8d28\u4e0a\u7684\u5f62\u5f0f\uff0c\u4e0b\u9762\u662f\u4e00\u822c\u4f7f\u7528\u5f62\u5f0f\n    c = a + b;\n    std::cout &lt;&lt; c.get1() &lt;&lt; &quot; &quot; &lt;&lt; c.get2() &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676384908880.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 108px; --smush-placeholder-aspect-ratio: 108\/87;\" \/><\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E5%85%A8%E5%B1%80%E5%87%BD%E6%95%B0%E5%AE%9E%E7%8E%B0\"><\/span>\u5168\u5c40\u51fd\u6570\u5b9e\u73b0<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass MyClass\n{\n    private:\n        int m_num1;\n        int m_num2;\n\n    public:\n        MyClass()\n        {\n            m_num1 = 0;\n            m_num2 = 0;\n        }\n\n        void set1(int num)\n        {\n            m_num1 = num;\n        }\n\n        void set2(int num)\n        {\n            m_num2 = num;\n        }\n\n        int get1()\n        {\n            return m_num1;\n        }\n\n        int get2()\n        {\n            return m_num2;\n        }\n};\n\nMyClass operator+(MyClass &amp;mc1, MyClass &amp;mc2)\n{\n    MyClass tmp;\n    tmp.set1(mc1.get1() + mc2.get1());\n    tmp.set2(mc1.get2() + mc2.get2());\n    return tmp;\n}\n\nint main()\n{\n    MyClass a, b, c;\n    a.set1(1);\n    a.set2(2);\n    b.set1(3);\n    b.set2(5);\n\n    \/\/ c = operator+(a, b); \/\/ \u672c\u8d28\u4e0a\u7684\u5f62\u5f0f\uff0c\u4e0b\u9762\u662f\u4e00\u822c\u4f7f\u7528\u5f62\u5f0f\n    c = a + b;\n    std::cout &lt;&lt; c.get1() &lt;&lt; &quot; &quot; &lt;&lt; c.get2() &lt;&lt; std::endl;\n}<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"i\"><\/span>&lt;&lt; \u91cd\u8f7d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u524d\u9762\u7684\u4f8b\u5b50\u5b9e\u73b0\u4e86\u4e24\u4e2a\u5bf9\u8c61\u76f8\u52a0\uff0c\u5b9e\u9645\u5185\u90e8\u4e24\u4e2a\u6570\u5bf9\u5e94\u76f8\u52a0\uff0c\u4f46\u662f\u8981\u8f93\u51fa\u663e\u793a\u65f6\u8981\u624b\u52a8\u53d6\u83b7\u53d6\u4e24\u4e2a\u503c\u6bd4\u8f83\u9ebb\u70e6\uff0c\u6240\u4ee5\u8fd9\u91cc\u8bbe\u6cd5\u91cd\u8f7d &lt;&lt;\uff0c\u5b9e\u73b0\u76f4\u63a5\u8f93\u51fa\u663e\u793a\u5bf9\u8c61\u5185\u5bb9\u3002<br \/>\n\u8fd9\u91cc\u91cd\u8f7d\u4e0d\u540c\u4e8e\u524d\u9762\uff0c\u5982\u679c\u4f7f\u7528\u6210\u5458\u51fd\u6570\u91cd\u8f7d\u7684\u5f62\u5f0f\uff0c\u5fc5\u987b\u6709\u4e00\u4e2a\u53c2\u6570\uff0c\u90a3\u4e48\u4f7f\u7528\u65f6\u5c31\u662f \u201c\u5bf9\u8c611.operator&lt;&lt;(\u5bf9\u8c612)\u201d \u7684\u5b9e\u8d28\u5f62\u5f0f\u4e86\u3002\u8fd9\u91cc\u4f7f\u7528\u9700\u8981\u7684\u5f62\u5f0f\u662f \u201cstd::cout &lt;&lt; \u5bf9\u8c61\u201d\uff0c\u6240\u4ee5\u5f97\u4f7f\u7528\u5168\u5c40\u51fd\u6570\u6765\u91cd\u8f7d\uff0c\u6b64\u65f6\u5fc5\u987b\u8981\u6709\u4e24\u4e2a\u53c2\u6570\u3002\u7b2c\u4e00\u4e2a\u53c2\u6570\u5176\u5b9e\u5c31\u662f\u8981\u5f15\u7528 std::cout\uff08\u5b83\u5176\u5b9e\u662f std::ostream \u7c7b\u578b\u7684\u8f93\u51fa\u6d41\uff09\uff0c\u7b2c\u4e8c\u53c2\u6570\u63a5\u8981\u663e\u793a\u5185\u5bb9\u7684\u5bf9\u8c61\uff0c\u8981\u663e\u793a\u7684\u5185\u5bb9\u6d41\u5165\u5230\u5f15\u7528\u7684 std::cout \u4e2d\uff0c\u518d\u5c06\u5b83\u7684\u5f15\u7528\u8fd4\u56de\uff0c\u5219\u5916\u90e8\u8c03\u7528\u65f6\u53ef\u4ee5\u7ee7\u7eed\u5728\u5b83\u540e\u9762 &lt;&lt; \u6dfb\u52a0\u8981\u663e\u793a\u7684\u5185\u5bb9\u3002<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass MyClass\n{\n    private:\n        int m_num1;\n        int m_num2;\n\n    public:\n        MyClass()\n        {\n            m_num1 = 0;\n            m_num2 = 0;\n        }\n\n        void set1(int num)\n        {\n            m_num1 = num;\n        }\n\n        void set2(int num)\n        {\n            m_num2 = num;\n        }\n\n        int get1()\n        {\n            return m_num1;\n        }\n\n        int get2()\n        {\n            return m_num2;\n        }\n\n        MyClass operator+(MyClass &amp;mc)\n        {\n            MyClass tmp;\n            tmp.set1(m_num1 + mc.get1());\n            tmp.set2(m_num2 + mc.get2());\n            return tmp;\n        }\n};\n\nstd::ostream &amp;operator&lt;&lt;(std::ostream &amp;cout, MyClass &amp;mc)\n{\n    cout &lt;&lt; &quot;num1 &quot; &lt;&lt; mc.get1() &lt;&lt; &quot;\uff0cnum2 &quot; &lt;&lt; mc.get2();\n    return cout;\n}\n\nint main()\n{\n    MyClass a, b, c;\n    a.set1(1);\n    a.set2(2);\n    b.set1(3);\n    b.set2(5);\n\n    \/\/ c = a.operator+(b); \/\/ \u672c\u8d28\u4e0a\u7684\u5f62\u5f0f\uff0c\u4e0b\u9762\u662f\u4e00\u822c\u4f7f\u7528\u5f62\u5f0f\n    c = a + b;\n    std::cout &lt;&lt; c &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676387741964.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 200px; --smush-placeholder-aspect-ratio: 200\/118;\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"_%E9%87%8D%E8%BD%BD\"><\/span>++ \u91cd\u8f7d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass MyInt\n{\n    private:\n        int m_num;\n\n    public:\n        MyInt(int num)\n        {\n            m_num = num;\n        }\n\n        int get()\n        {\n            return m_num;\n        }\n\n        MyInt &amp;operator++() \/\/ \u524d\u7f6e\n        {\n            ++m_num;\n            return *this; \/\/ \u8fd4\u56de\u5bf9\u8c61\u81ea\u5df1\n        }\n\n        MyInt operator++(int) \/\/ \u540e\u7f6e\n        {\n            MyInt tmp = *this; \/\/ \u5148\u4fdd\u5b58\u65e7\u5bf9\u8c61\u4e2d\u7684\u503c\n            ++m_num;\n            return tmp;\n        }\n\n};\n\nstd::ostream &amp;operator&lt;&lt;(std::ostream &amp;cout, MyInt mi)\n{\n    cout &lt;&lt; mi.get();\n    return cout;\n}\n\nint main()\n{\n    MyInt mi(8);\n    std::cout &lt;&lt; ++mi &lt;&lt; std::endl;\n    std::cout &lt;&lt; mi++ &lt;&lt; std::endl;\n    std::cout &lt;&lt; mi &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676390186793.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 167px; --smush-placeholder-aspect-ratio: 167\/127;\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"_%E9%87%8D%E8%BD%BD-2\"><\/span>= \u91cd\u8f7d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u8d4b\u503c\u91cd\u8f7d\u8fd9\u91cc\u8003\u8651\u7684\u60c5\u51b5\u548c\u62f7\u8d1d\u6784\u9020\u7c7b\u4f3c\uff0c\u5982\u679c\u4e0d\u6d89\u53ca\u4f7f\u7528\u5806\u533a\uff0c\u9ed8\u8ba4\u7684\u6d45\u62f7\u8d1d\u8d4b\u503c\u64cd\u4f5c\u4e5f\u80fd\u6ee1\u8db3\u8981\u6c42\u3002\u5982\u679c\u6709\u5728\u5806\u533a\u5f00\u8f9f\u5185\u5b58\uff0c\u90a3\u4e48\u5c31\u5f97\u5b9e\u73b0\u6df1\u62f7\u8d1d\u4e86\u3002<\/p>\n<p>= \u91cd\u8f7d\u53ea\u80fd\u901a\u8fc7\u6210\u5458\u51fd\u6570\u5b9e\u73b0<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass MyClass\n{\n    private:\n        int *m_num = NULL;\n\n    public:\n        MyClass()\n        {\n            m_num = new int(0);\n        }\n\n        MyClass(int num)\n        {\n            if (m_num != NULL)\n            {\n                delete m_num;\n                m_num = NULL;\n            }\n            m_num = new int(num);\n        }\n\n        int get()\n        {\n            return *m_num;\n        }\n\n        ~MyClass()\n        {\n            if (m_num != NULL)\n            {\n                delete m_num;\n                m_num = NULL;\n            }\n        }\n\n        MyClass &amp;operator=(MyClass &amp;mc)\n        {\n            if (m_num != NULL)\n            {\n                delete m_num;\n                m_num = NULL;\n            }\n            m_num = new int(mc.get());\n\n            return *this;\n        }\n};\n\nstd::ostream &amp;operator&lt;&lt;(std::ostream &amp;cout, MyClass &amp;mc)\n{\n    cout &lt;&lt; mc.get();\n    return cout;\n}\n\nint main()\n{\n    MyClass mc1(9);\n    MyClass mc2, mc3;\n\n    mc3 = mc2 = mc1;\n    std::cout &lt;&lt; mc3 &lt;&lt; &quot; &quot; &lt;&lt; mc2 &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676559154312.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 236px; --smush-placeholder-aspect-ratio: 236\/117;\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"%3E_%E9%87%8D%E8%BD%BD\"><\/span>&gt; \u91cd\u8f7d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u8fd9\u91cc\u4e3e\u4e00\u4e2a\u4f8b\u5b50\uff0c\u5b9a\u4e49\u4e00\u4e2a\u7c7b\uff0c\u6709\u540d\u5b57\u548c\u5e74\u9f84\u4e24\u4e2a\u5c5e\u6027\uff0c\u91cd\u8f7d\u5927\u4e8e\u7b26\u53f7\u5b9e\u73b0\u4e24\u4e2a\u5bf9\u8c61\u7684\u5e74\u9f84\u6bd4\u8f83\u3002<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass Person\n{\n    private:\n        std::string m_name;\n        int m_age;\n\n    public:\n        Person(std::string name, int age)\n        {\n            m_name = name;\n            m_age = age;\n        }\n\n        int getAge()\n        {\n            return m_age;\n        }\n\n        bool operator&gt;(Person &amp;p)\n        {\n            if (m_age &gt; p.getAge())\n            {\n                return true;\n            }\n            return false;\n        }\n};\n\nint main()\n{\n    Person p1(&quot;\u5c0f\u660e&quot;, 20);\n    Person p2(&quot;\u5c0f\u7ea2&quot;, 19);\n    Person p3(&quot;\u5c0f\u5f3a&quot;, 21);\n\n    std::cout &lt;&lt; (p1 &gt; p2) &lt;&lt; std::endl;\n    std::cout &lt;&lt; (p1 &gt; p3) &lt;&lt; std::endl;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676560244382.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 195px; --smush-placeholder-aspect-ratio: 195\/129;\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"_%E9%87%8D%E8%BD%BD-3\"><\/span>() \u91cd\u8f7d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u51fd\u6570\u8c03\u7528\u8fd0\u7b97\u7b26 () \u91cd\u8f7d\uff0c\u4e5f\u53eb\u505a\u4eff\u51fd\u6570<\/p>\n<pre><code class=\"language-cpp\">#include &lt;iostream&gt;\n\nclass Add\n{\n    public:\n        int operator()(int num1, int num2)\n        {\n            return num1 + num2;\n        }\n};\n\nclass Print\n{\n    public:\n        void operator()(std::string s)\n        {\n            std::cout &lt;&lt; s &lt;&lt; std::endl;\n        }\n};\n\nint main()\n{\n    Add add;\n    std::cout &lt;&lt; add(9, 1) &lt;&lt; std::endl; \/\/ \u8c03\u7528\u4eff\u51fd\u6570\n    std::cout &lt;&lt; Add()(1, 99) &lt;&lt; std::endl; \/\/ \u533f\u540d\u5bf9\u8c61-\u4eff\u51fd\u6570\n\n    Print print;\n    print(&quot;Hello world\uff01&quot;); \/\/ \u8c03\u7528\u4eff\u51fd\u6570\n\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676561906703.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 251px; --smush-placeholder-aspect-ratio: 251\/154;\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u73af\u5883 Debian 11 \uff08arm64\uff09 \u7f16\u8bd1\u5668 g++ 10.2.1\uff1b\u7f16\u8bd1\u6807\u51c6 C++20\uff1b\u53c2\u6570\uff1a-std= [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"zakra_page_container_layout":"customizer","zakra_page_sidebar_layout":"customizer","zakra_remove_content_margin":false,"zakra_sidebar":"customizer","zakra_transparent_header":"customizer","zakra_logo":0,"zakra_main_header_style":"default","zakra_menu_item_color":"","zakra_menu_item_hover_color":"","zakra_menu_item_active_color":"","zakra_menu_active_style":"","zakra_page_header":true,"_lmt_disableupdate":"no","_lmt_disable":"no","footnotes":""},"categories":[1],"tags":[],"class_list":["post-9028","post","type-post","status-publish","format-standard","hentry","category-all"],"modified_by":"IYATT-yx","_links":{"self":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts\/9028","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9028"}],"version-history":[{"count":0,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts\/9028\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9028"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9028"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9028"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}