{"id":14908,"date":"2024-10-21T09:34:26","date_gmt":"2024-10-21T01:34:26","guid":{"rendered":"http:\/\/xinyiworld.top\/wordpress_it\/?p=14908"},"modified":"2024-10-21T10:45:04","modified_gmt":"2024-10-21T02:45:04","slug":"c%e5%b8%b8%e8%a7%81%e9%94%99%e8%af%af%e6%80%bb%e7%bb%93","status":"publish","type":"post","link":"http:\/\/xinyiworld.top\/wordpress_it\/?p=14908","title":{"rendered":"c++\u5e38\u89c1\u9519\u8bef\u603b\u7ed3"},"content":{"rendered":"<ul>\n<li>Invalid Conversion from \u2018const char*\u2019 to \u2018char \uff08\u5e38\u91cf\u65e0\u6cd5\u8f6c\u6210\u666e\u901a\u53d8\u91cf\uff09<br \/>\n<a href=\"https:\/\/blog.csdn.net\/qq_57761637\/article\/details\/140312258\">https:\/\/blog.csdn.net\/qq_57761637\/article\/details\/140312258<\/a><\/li>\n<\/ul>\n<p><code>const_cast&lt;char*&gt;(message)<\/code>\uff0c\u5229\u7528const_cast\u5f3a\u8f6c\u3002<\/p>\n<ul>\n<li>c++ \u51fd\u6570\u8fd4\u56de\u5c40\u90e8class\u5b9e\u4f8b\u7684\u6307\u9488\u4e3a\u7a7a\u6307\u9488<br \/>\n\u5728C++\u4e2d\uff0c\u51fd\u6570\u53ef\u4ee5\u8fd4\u56de\u6307\u5411\u5c40\u90e8\u7c7b\u5b9e\u4f8b\u7684\u6307\u9488\u7684\u95ee\u9898\u662f\uff0c\u5c40\u90e8\u7c7b\u5b9e\u4f8b\u968f\u7740\u51fd\u6570\u7684\u7ed3\u675f\u4f1a\u88ab\u9500\u6bc1\uff0c\u8fd4\u56de\u7684\u6307\u9488\u5c06\u6307\u5411\u4e00\u4e2a\u5df2\u7ecf\u9500\u6bc1\u7684\u5bf9\u8c61\uff0c\u8fd9\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u9519\u8bef\u3002\u8981\u907f\u514d\u8fd9\u4e2a\u95ee\u9898\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u51e0\u79cd\u65b9\u5f0f\u6765\u8fd4\u56de\u5c40\u90e8\u7c7b\u5b9e\u4f8b\u7684\u6307\u9488\uff1a<\/li>\n<\/ul>\n<p>1.\u4f7f\u7528new\u5173\u952e\u5b57\u5728\u5806\u4e0a\u521b\u5efa\u7c7b\u5b9e\u4f8b\uff0c\u7136\u540e\u8fd4\u56de\u6307\u9488\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u5c40\u90e8\u5b9e\u4f8b\u7684\u9500\u6bc1\u95ee\u9898\uff0c\u4f46\u8981\u8bb0\u5f97\u6700\u7ec8\u4f7f\u7528\u5b8c\u6bd5\u540e\u9700\u8981\u901a\u8fc7delete\u6765\u91ca\u653e\u5185\u5b58\u3002<\/p>\n<pre><code class=\"language-cpp\">class MyClass {\npublic:\n    void Display() {\n        cout &lt;&lt; &quot;Hello, World!&quot; &lt;&lt; endl;\n    }\n};\n\nMyClass* CreateMyClass() {\n    MyClass* obj = new MyClass();\n    return obj;\n}\n\nint main() {\n    MyClass* obj = CreateMyClass();\n    obj-&gt;Display();\n    delete obj;\n    return 0;\n}<\/code><\/pre>\n<p>2.\u5c06\u7c7b\u5b9e\u4f8b\u4f5c\u4e3a\u51fd\u6570\u7684\u9759\u6001\u5c40\u90e8\u53d8\u91cf\uff0c\u8fd9\u6837\u5b83\u7684\u751f\u547d\u5468\u671f\u4f1a\u548c\u7a0b\u5e8f\u7684\u751f\u547d\u5468\u671f\u4e00\u6837\u957f\uff0c\u76f4\u5230\u7a0b\u5e8f\u7ed3\u675f\u3002<\/p>\n<pre><code class=\"language-cpp\">class MyClass {\npublic:\n    void Display() {\n        cout &lt;&lt; &quot;Hello, World!&quot; &lt;&lt; endl;\n    }\n};\n\nMyClass* GetMyClass() {\n    static MyClass obj;\n    return &amp;obj;\n}\n\nint main() {\n    MyClass* obj = GetMyClass();\n    obj-&gt;Display();\n    return 0;\n}<\/code><\/pre>\n<p>3.\u5982\u679c\u4f60\u7684\u7c7b\u6709\u4e00\u4e2a\u751f\u547d\u5468\u671f\u957f\u4e8e\u51fd\u6570\u7684\u5916\u90e8\u7c7b\uff0c\u4f60\u53ef\u4ee5\u8fd4\u56de\u6307\u5411\u8fd9\u4e2a\u5916\u90e8\u7c7b\u4e2d\u7684\u7c7b\u5b9e\u4f8b\u7684\u6307\u9488\u3002<\/p>\n<pre><code class=\"language-cpp\">class OuterClass {\npublic:\n    class MyClass {\n    public:\n        void Display() {\n            cout &lt;&lt; &quot;Hello, World!&quot; &lt;&lt; endl;\n        }\n    };\n\n    MyClass* GetMyClass() {\n        return &amp;myClassInstance;\n    }\n\nprivate:\n    MyClass myClassInstance;\n};\n\nint main() {\n    OuterClass outer;\n    OuterClass::MyClass* obj = outer.GetMyClass();\n    obj-&gt;Display();\n    return 0;\n}<\/code><\/pre>\n<p>4.\u5982\u679c\u4f60\u4e0d\u5e0c\u671b\u4f7f\u7528\u5806\u6216\u8005\u6539\u53d8\u7c7b\u5b9e\u4f8b\u7684\u751f\u547d\u5468\u671f\uff0c\u53e6\u4e00\u4e2a\u9009\u62e9\u662f\u4f7f\u7528\u667a\u80fd\u6307\u9488\uff08\u4f8b\u5982std::unique_ptr\u6216std::shared_ptr\uff09\u6765\u7ba1\u7406\u8d44\u6e90\u3002<\/p>\n<pre><code class=\"language-cpp\">class MyClass {\npublic:\n    void Display() {\n        cout &lt;&lt; &quot;Hello, World!&quot; &lt;&lt; endl;\n    }\n};\n\nstd::unique_ptr&lt;MyClass&gt; CreateMyClass() {\n    std::unique_ptr&lt;MyClass&gt; obj(new MyClass());\n    return obj;\n}\n\nint main() {\n    std::unique_ptr&lt;MyClass&gt; obj = CreateMyClass();\n    obj-&gt;Display();\n    \/\/ \u4e0d\u9700\u8981\u624b\u52a8\u5220\u9664\uff0c\u667a\u80fd\u6307\u9488\u4f1a\u81ea\u52a8\u91ca\u653e\u8d44\u6e90\n    return 0;\n}<\/code><\/pre>\n<p>\u4ee5\u4e0a\u65b9\u6cd5\u90fd\u53ef\u4ee5\u907f\u514d\u8fd4\u56de\u6307\u5411\u5df2\u9500\u6bc1\u5c40\u90e8\u7c7b\u5b9e\u4f8b\u7684\u6307\u9488\u7684\u95ee\u9898\uff0c\u4f46\u662f\u8981\u6ce8\u610f\u7ba1\u7406\u597d\u5185\u5b58\uff0c\u907f\u514d\u5185\u5b58\u6cc4\u9732\u3002<\/p>\n<button class=\"simplefavorite-button\" data-postid=\"14908\" data-siteid=\"1\" data-groupid=\"1\" data-favoritecount=\"0\" style=\"\">\u6536\u85cf <i class=\"sf-icon-star-empty\"><\/i><\/button>","protected":false},"excerpt":{"rendered":"<p>Invalid Conversion from \u2018const char*\u2019 to \u2018char \uff08\u5e38\u91cf [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1145],"tags":[],"_links":{"self":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/14908"}],"collection":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14908"}],"version-history":[{"count":3,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/14908\/revisions"}],"predecessor-version":[{"id":14920,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/14908\/revisions\/14920"}],"wp:attachment":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14908"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14908"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}