{"id":25003,"date":"2024-03-16T04:12:06","date_gmt":"2024-03-16T04:12:06","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-can-i-call-the-c-override-method\/"},"modified":"2024-03-22T05:07:20","modified_gmt":"2024-03-22T05:07:20","slug":"how-can-i-call-the-c-override-method","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-can-i-call-the-c-override-method\/","title":{"rendered":"How can I call the C++ override method?"},"content":{"rendered":"<p>In C++, the override keyword can be used to explicitly indicate that a function is overriding a virtual function in a base class. The syntax for using the override keyword is as follows:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">Base<\/span> {\r\n<span class=\"hljs-keyword\">public<\/span>:\r\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">virtual<\/span> <span class=\"hljs-type\">void<\/span> <span class=\"hljs-title\">foo<\/span><span class=\"hljs-params\">()<\/span> <span class=\"hljs-type\">const<\/span> <\/span>{\r\n        cout &lt;&lt; <span class=\"hljs-string\">\"Base::foo()\"<\/span> &lt;&lt; endl;\r\n    }\r\n};\r\n\r\n<span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">Derived<\/span> : <span class=\"hljs-keyword\">public<\/span> Base {\r\n<span class=\"hljs-keyword\">public<\/span>:\r\n    <span class=\"hljs-function\"><span class=\"hljs-type\">void<\/span> <span class=\"hljs-title\">foo<\/span><span class=\"hljs-params\">()<\/span> <span class=\"hljs-type\">const<\/span> <span class=\"hljs-keyword\">override<\/span> <\/span>{\r\n        cout &lt;&lt; <span class=\"hljs-string\">\"Derived::foo()\"<\/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    Derived d;\r\n    d.<span class=\"hljs-built_in\">foo<\/span>(); <span class=\"hljs-comment\">\/\/ \u8c03\u7528Derived\u7c7b\u4e2d\u7684foo()\u51fd\u6570<\/span>\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>In the above example code, the Derived class inherits from the Base class and overrides the virtual function foo(). Using the override keyword to modify the foo() function in the Derived class allows the compiler to verify if this function truly overrides the virtual function in the base class.<\/p>\n<p>In the main function, we created an object of the Derived class named &#8216;d&#8217; and called its foo() function. Because the foo() function is marked as override, the compiler automatically calls the foo() function in the Derived class, resulting in the output &#8220;Derived::foo()&#8221;.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C++, the override keyword can be used to explicitly indicate that a function is overriding a virtual function in a base class. The syntax for using the override keyword is as follows: class Base { public: virtual void foo() const { cout &lt;&lt; &#8220;Base::foo()&#8221; &lt;&lt; endl; } }; class Derived : public Base { [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-25003","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"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 can I call the C++ override method? - Blog - Silicon Cloud<\/title>\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-can-i-call-the-c-override-method\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How can I call the C++ override method?\" \/>\n<meta property=\"og:description\" content=\"In C++, the override keyword can be used to explicitly indicate that a function is overriding a virtual function in a base class. The syntax for using the override keyword is as follows: class Base { public: virtual void foo() const { cout &lt;&lt; &quot;Base::foo()&quot; &lt;&lt; endl; } }; class Derived : public Base { [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-can-i-call-the-c-override-method\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-16T04:12:06+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-22T05:07:20+00:00\" \/>\n<meta name=\"author\" content=\"Emily Johnson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Emily Johnson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-can-i-call-the-c-override-method\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-can-i-call-the-c-override-method\/\"},\"author\":{\"name\":\"Emily Johnson\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/3b041b19cffc258705478ecfab895378\"},\"headline\":\"How can I call the C++ override method?\",\"datePublished\":\"2024-03-16T04:12:06+00:00\",\"dateModified\":\"2024-03-22T05:07:20+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-can-i-call-the-c-override-method\/\"},\"wordCount\":134,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-can-i-call-the-c-override-method\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-can-i-call-the-c-override-method\/\",\"name\":\"How can I call the C++ override method? 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