{"id":15966,"date":"2024-03-15T12:04:25","date_gmt":"2024-03-15T12:04:25","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-is-the-c-destructor-function-invoked\/"},"modified":"2025-08-06T23:03:37","modified_gmt":"2025-08-06T23:03:37","slug":"how-is-the-c-destructor-function-invoked","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-is-the-c-destructor-function-invoked\/","title":{"rendered":"How is the C++ destructor function invoked?"},"content":{"rendered":"<p>The C++ destructor is automatically called when an object is destroyed, without the need for manual invocation. The destructor is automatically called when the object&#8217;s lifetime ends, such as when the object goes out of scope, the delete operator is used to release dynamically allocated objects, or when the program terminates.<\/p>\n<p>Here is an example:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;iostream&gt;<\/span><\/span>\r\n<span class=\"hljs-keyword\">using<\/span> <span class=\"hljs-keyword\">namespace<\/span> std;\r\n\r\n<span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">MyClass<\/span> {\r\n<span class=\"hljs-keyword\">public<\/span>:\r\n    <span class=\"hljs-built_in\">MyClass<\/span>() {\r\n        cout &lt;&lt; <span class=\"hljs-string\">\"\u6784\u9020\u51fd\u6570\u88ab\u8c03\u7528\"<\/span> &lt;&lt; endl;\r\n    }\r\n\r\n    ~<span class=\"hljs-built_in\">MyClass<\/span>() {\r\n        cout &lt;&lt; <span class=\"hljs-string\">\"\u6790\u6784\u51fd\u6570\u88ab\u8c03\u7528\"<\/span> &lt;&lt; endl;\r\n    }\r\n};\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-type\">int<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span> <\/span>{\r\n    MyClass obj; <span class=\"hljs-comment\">\/\/ \u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61<\/span>\r\n    <span class=\"hljs-comment\">\/\/ \u5bf9\u8c61\u8d85\u51fa\u4f5c\u7528\u57df\uff0c\u6790\u6784\u51fd\u6570\u4f1a\u88ab\u81ea\u52a8\u8c03\u7528<\/span>\r\n\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>Output:<\/p>\n<pre class=\"post-pre\"><code>\u6784\u9020\u51fd\u6570\u88ab\u8c03\u7528\r\n\u6790\u6784\u51fd\u6570\u88ab\u8c03\u7528\r\n<\/code><\/pre>\n<p>In the example above, the destructor function will be automatically called when the object obj goes out of scope, resulting in the output &#8220;Destructor called&#8221;.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The C++ destructor is automatically called when an object is destroyed, without the need for manual invocation. The destructor is automatically called when the object&#8217;s lifetime ends, such as when the object goes out of scope, the delete operator is used to release dynamically allocated objects, or when the program terminates. Here is an example: [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[453,1402,299,1404,1403],"class_list":["post-15966","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-development","tag-guide","tag-programming","tag-technology","tag-tutorial"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How is the C++ destructor function invoked? - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn about how is the c++ destructor function invoked?. Comprehensive guide with examples and best practices.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-is-the-c-destructor-function-invoked\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How is the C++ destructor function invoked?\" \/>\n<meta property=\"og:description\" content=\"Learn about how is the c++ destructor function invoked?. 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