{"id":1450,"date":"2018-12-10T16:14:34","date_gmt":"2018-12-10T08:14:34","guid":{"rendered":"http:\/\/www.yusian.com\/blog\/?p=1450"},"modified":"2020-12-01T12:44:51","modified_gmt":"2020-12-01T04:44:51","slug":"%e9%80%9a%e8%bf%87%e5%af%b9%e8%b1%a1%e5%9c%b0%e5%9d%80%e8%8e%b7%e5%8f%96%e5%af%b9%e8%b1%a1%e7%9a%84%e8%99%9a%e5%87%bd%e6%95%b0%e5%88%97%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/www.yusian.com\/blog\/project\/2018\/12\/10\/1614341450.html","title":{"rendered":"\u901a\u8fc7\u5bf9\u8c61\u5730\u5740\u83b7\u53d6\u5bf9\u8c61\u7684\u865a\u51fd\u6570\u5217\u8868"},"content":{"rendered":"\n<p>1\u3001C++\u4e2d\u591a\u6001\u662f\u4e00\u79cd\u6cdb\u578b\u7f16\u7a0b\u601d\u60f3\uff0c\u865a\u51fd\u6570\u662f\u5b9e\u73b0\u8fd9\u4e2a\u601d\u60f3\u7684\u8bed\u6cd5\u57fa\u7840\uff1b<\/p>\n\n\n\n<p>2\u3001\u865a\u51fd\u6570\u5217\u8868\u7b80\u79f0\u865a\u8868\uff0c\u51fa\u73b0\u5728\u5bf9\u8c61\u7684\u5934\u90e8\uff0c\u5373\u865a\u8868\u7684\u9996\u5730\u5740\u5373\u5bf9\u8c61\u5730\u5740\uff1b<\/p>\n\n\n\n<p>3\u3001\u901a\u8fc7\u521b\u5efa\u597d\u7684\u5bf9\u8c61\uff0c\u53ef\u4ee5\u5f97\u5230\u865a\u8868\uff0c\u4ece\u800c\u901a\u8fc7\u504f\u79fb\u53ef\u83b7\u53d6\u6240\u6709\u865a\u51fd\u6570\u7684\u5730\u5740\uff1b<\/p>\n\n\n\n<p>4\u3001\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre lang=\"objc\" line=\"1\">#include <iostream>\nusing namespace std;\n\/\/ Person\u7c7b\u5b9a\u4e49\nclass Person{\npublic:\n    virtual void MethodOne(){   \/\/ \u865a\u51fd\u6570\n        cout << __func__ << endl;\n    }\n    virtual void MethodTwo(){   \/\/ \u865a\u51fd\u6570\n        cout << __func__ << endl;\n    }\n};\n\/\/ Student\u7c7b\u5b9a\u4e49\nclass Student: public Person{\n    \n};\n\/\/ \u5b9a\u4e49\u4e00\u4e2a\u6307\u5411\u51fd\u6570\u7684\u6307\u9488\u7c7b\u578b\ntypedef void (*method)();\nint main(int argc, const char *argv[]){\n    Person *p = new Student();\n    \/\/ 1\u3001\u5bf9\u8c61\u5730\u5740\u5373\u865a\u8868\u5730\u5740(\u5bf9\u8c61\u7684\u5934\u90e8\u5373\u865a\u8868)\n    \/\/ 2\u3001\u53d6\u53d8\u91cfp\u7684\u503c\u5f97\u5230\u865a\u8868\u5730\u5740(\u5f3a\u8f6c\u4e3a\u6307\u5411\u51fd\u6570\u6307\u9488\u7684\u6570\u7ec4)\n    method *method_map = (method *)*(method*)p;\n    \/\/ \u865a\u51fd\u6570\u6570\u7ec4\u4e2d\u53d6\u503c\uff0c\u5355\u4e2a\u5bf9\u8c61\u4e3a\u51fd\u6570\u4f53\u5730\u5740\n    method method1 = *method_map[0];\n    method method2 = *method_map[1];\n    method1();\n    method2();\n    return 0;\n}\n<\/pre>\n\n\n\n<p>5\u3001\u6267\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre lang=\"mach\">MethodOne\nMethodTwo\nProgram ended with exit code: 0<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001C++\u4e2d\u591a\u6001\u662f\u4e00\u79cd\u6cdb\u578b\u7f16\u7a0b\u601d\u60f3\uff0c\u865a\u51fd\u6570\u662f\u5b9e\u73b0\u8fd9\u4e2a\u601d\u60f3\u7684\u8bed\u6cd5\u57fa\u7840\uff1b 2\u3001\u865a\u51fd\u6570\u5217\u8868\u7b80\u79f0\u865a\u8868\uff0c\u51fa\u73b0\u5728\u5bf9\u8c61\u7684\u5934\u90e8\uff0c\u5373\u865a\u8868\u7684\u9996\u5730\u5740\u5373\u5bf9\u8c61\u5730\u5740\uff1b 3\u3001\u901a\u8fc7\u521b\u5efa\u597d\u7684\u5bf9\u8c61\uff0c\u53ef\u4ee5\u5f97\u5230\u865a\u8868\uff0c\u4ece\u800c\u901a\u8fc7\u504f\u79fb\u53ef\u83b7\u53d6\u6240\u6709\u865a\u51fd\u6570\u7684\u5730\u5740\uff1b 4\u3001\u793a\u4f8b\u4ee3\u7801\uff1a 5\u3001\u6267\u884c\u7ed3\u679c\uff1a<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88,11],"tags":[89,202,203,204],"class_list":["post-1450","post","type-post","status-publish","format-standard","hentry","category-cpp","category-project","tag-c","tag-202","tag-203","tag-204"],"_links":{"self":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1450","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/comments?post=1450"}],"version-history":[{"count":0,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1450\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/media?parent=1450"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/categories?post=1450"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/tags?post=1450"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}