{"rsdb":{"rid":"244438","subhead":"","postdate":"0","aid":"168213","fid":"49","uid":"1","topic":"1","content":"<div id=\"Article\"> \n <h2>\u4e00\u3001\u533a\u522b<\/h2> \n <p>\u865a\u57fa\u7c7b\uff1a\u88ab\u201cvirtual\u201d\u7ee7\u627f\u7684\u7c7b\uff0c\u4e5f\u5c31\u662f\u8bf4\u4efb\u4f55\u7c7b\u90fd\u53ef\u4ee5\u6210\u4e3a\u865a\u57fa\u7c7b\u3002 \u62bd\u8c61\u7c7b\uff1a\u81f3\u5c11\u5305\u542b\u4e00\u4e2a\u7eaf\u865a\u51fd\u6570\u7684\u7c7b\uff0c\u5176\u4e0d\u80fd\u88ab\u5b9e\u4f8b\u5316\uff0c\u54ea\u6015\u8be5\u7eaf\u865a\u51fd\u6570\u5728\u8be5\u7c7b\u4e2d\u88ab\u5b9a\u4e49\u3002 \u4e8c\u8005\u6ca1\u6709\u4efb\u4f55\u8054\u7cfb\u3002<\/p> \n <h2>\u4e8c\u3001<a target=\"_blank\" class=\"keylink\">\u6e90\u7801<\/a><\/h2> \n <pre class=\"brush:java;\">\r\nclass CHuman\r\n{\r\npublic:\r\n    virtual int add(int a,int b)\r\n    {\r\n        return (a + b);\r\n    }\r\n    virtual int cross(int a,int b) = 0\r\n    {\r\n        return (a*b);\r\n    }\r\n};\r\n\r\nint _tmain(int argc, _TCHAR* argv[])\r\n{\r\n    CHuman *pHuman = NULL;\r\n    \/\/error C2259: \u201cCHuman\u201d: \u4e0d\u80fd\u5b9e\u4f8b\u5316\u62bd\u8c61\u7c7b\r\n    \/\/\u7531\u4e8e\u4e0b\u5217\u6210\u5458:\r\n    \/\/\u201cint CHuman::cross(int,int)\u201d: \u662f\u62bd\u8c61\u7684\r\n    pHuman = new CHuman();\r\n    return 0;\r\n}<\/pre> \n <p>\u4e0a\u8ff0\u4ee3\u7801\u53ef\u77e5\uff0c\u62bd\u8c61\u7c7b\u4e0d\u80fd\u88ab\u5b9e\u4f8b\u5316\uff0c\u54ea\u6015\u5176\u7eaf\u865a\u51fd\u6570\u5df2\u7ecf\u88ab\u5b9a\u4e49\u3002<\/p> \n<\/div>","orderid":"0","title":"C++ \u865a\u57fa\u7c7b\u548c\u62bd\u8c61\u7c7b\u5173\u7cfb\u8bb2\u89e3","smalltitle":"","mid":"0","fname":"c++\u7f16\u7a0b\u57fa\u7840","special_id":"0","bak_id":"0","info":"0","hits":"198","pages":"1","comments":"0","posttime":"2018-02-13 12:56:10","list":"1518497770","username":"admin","author":"","copyfrom":"","copyfromurl":"","titlecolor":"","fonttype":"0","titleicon":"0","picurl":"https:\/\/www.cppentry.com\/upload_files\/","ispic":"0","yz":"1","yzer":"","yztime":"0","levels":"0","levelstime":"0","keywords":"<A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=%C0%E0%BA%CD' target=_blank>\u7c7b\u548c<\/A> <A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=%B3%E9%CF%F3' target=_blank>\u62bd\u8c61<\/A> <A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=%B9%D8%CF%B5' target=_blank>\u5173\u7cfb<\/A> <A HREF='https:\/\/www.cppentry.com\/do\/search.php?type=keyword&keyword=%BD%B2%BD%E2' target=_blank>\u8bb2\u89e3<\/A>","jumpurl":"","iframeurl":"","style":"","template":"a:3:{s:4:\"head\";s:0:\"\";s:4:\"foot\";s:0:\"\";s:8:\"bencandy\";s:0:\"\";}","target":"0","ip":"113.87.122.142","lastfid":"0","money":"0","buyuser":"","passwd":"","allowdown":"","allowview":"","editer":"","edittime":"0","begintime":"0","endtime":"0","description":"C++ \u865a\u57fa\u7c7b\u548c\u62bd\u8c61\u7c7b\u5173\u7cfb\u8bb2\u89e3","lastview":"1700751964","digg_num":"2","digg_time":"1711327472","forbidcomment":"0","ifvote":"0","heart":"","htmlname":"","city_id":"0"},"page":"1"}