{"id":125,"date":"2016-10-04T23:14:59","date_gmt":"2016-10-04T15:14:59","guid":{"rendered":"http:\/\/localhost\/wordpress\/?p=125"},"modified":"2019-09-29T21:31:16","modified_gmt":"2019-09-29T19:31:16","slug":"c-inheritance","status":"publish","type":"post","link":"https:\/\/myoceane.fr\/index.php\/c-inheritance\/","title":{"rendered":"[C++] \u7e7c\u627f\u6574\u7406"},"content":{"rendered":"<div id=\"fb-root\"><\/div>\n<p>\u7e7c\u627f\u7684\u5206\u985e\uff1a<\/p>\n<p>1. \u516c\u958b\u7e7c\u627f(public): \u5b50\u6210\u54e1\u53ea\u80fd\u4f7f\u7528\u7236\u985e\u5225\u4e2d\u5ba3\u544a\u70ba public\/protected \u7684\u51fd\u5f0f(function)\u8207\u6210\u54e1(member)\uff0c\u4f46\u662f\u4e0d\u80fd\u5920<\/p>\n<pre class=\"lang:php theme:twilight mark:1,2-4\">class A{\n    public:\n        int one;\n    protected:\n        int two;\n    private:\n        int three;\n};\n\nclass B: public A{\n    public:\n    void setvalue(){\n        one = 1; \/\/ OK\n        two = 2; \/\/ OK\n        three = 3; \/\/ NG\n    }\n}\n\nclass C: private A{\n    public:\n    void setvalue(){\n        one = 1;   \/\/ OK\n        two = 2;   \/\/ OK\n        three = 3; \/\/ OK\n    }\n}\n\nvoid main(){\n    B b;\n    b.one = 1;  \/\/ OK\n    b.two = 2;  \/\/ NG\n    b.three = 3;\/\/ NG\n    C c;\n    c.one = 1;  \/\/ OK\n    c.two = 2;  \/\/ NG\n    c.three = 3;\/\/ NG\n}\n<\/pre>\n<p>\u865b\u64ec\u7e7c\u627f(Virtual Inheritance)\uff1a\u7576\u4e00\u500b class \u7e7c\u627f\u591a\u7684 parent class\uff0c\u800c\u9019\u4e9b\u7236\u985e\u5225\u53c8\u7e7c\u627f\u540c\u4e00\u500b\u4e0a\u5c64\u7684\u7236\u985e\u5225\u6642\uff0c\u865b\u64ec\u7e7c\u627f\u9700\u8981\u88ab\u7528\u5230\uff0c\u4ee5\u4e0b\u70ba\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\u3002<\/p>\n<pre class=\"lang:php theme:twilight mark:1,2-4\">class A{\n    \/\/     \n};\n\nclass B1: virtual public A{\n    \/\/\n};\n \nclass B2: virtual public A{\n    \/\/\n};\n\nclass C: public B1, public B2{\n    \/\/\n};\n\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u7e7c\u627f\u7684\u5206\u985e\uff1a 1. \u516c\u958b\u7e7c\u627f(public): \u5b50\u6210\u54e1\u53ea\u80fd\u4f7f\u7528\u7236\u985e\u5225\u4e2d\u5ba3\u544a\u70ba public\/protected \u7684\u51fd\u5f0f(function)\u8207\u6210\u54e1(member)\uff0c\u4f46\u662f\u4e0d\u80fd\u5920 class A{ public: int one; protected: int two; private: int three; }; class B:<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-125","post","type-post","status-publish","format-standard","hentry","category-cc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[C++] \u7e7c\u627f\u6574\u7406 - \u60f3\u65b9\u6d89\u6cd5 - \u91cf\u74f6\u5916\u7684\u5929\u7a7a M-Y-Oceane<\/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:\/\/myoceane.fr\/index.php\/c-inheritance\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[C++] \u7e7c\u627f\u6574\u7406 - \u60f3\u65b9\u6d89\u6cd5 - \u91cf\u74f6\u5916\u7684\u5929\u7a7a M-Y-Oceane\" \/>\n<meta property=\"og:description\" content=\"\u7e7c\u627f\u7684\u5206\u985e\uff1a 1. \u516c\u958b\u7e7c\u627f(public): \u5b50\u6210\u54e1\u53ea\u80fd\u4f7f\u7528\u7236\u985e\u5225\u4e2d\u5ba3\u544a\u70ba public\/protected \u7684\u51fd\u5f0f(function)\u8207\u6210\u54e1(member)\uff0c\u4f46\u662f\u4e0d\u80fd\u5920 class A{ public: int one; 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