C++类继承之子类调用父类的构造函数的实例详解
C++类继承之子类调用父类的构造函数的实例详解
父类HttpUtil:
#pragmaonce #include#include usingnamespacestd; classHttpUtil { private: LPVOIDhInternet; LPVOIDhConnect; LPVOIDhRequest; protected: wchar_t*mHostName; shortmPort; stringsendRequest(WCHAR*pvHostName,shortpvPort,WCHAR*pvUrl,WCHAR*pvMethod,char*pvPostData,intpvPostDataLen); public: HttpUtil(wchar_t*pvHostName,shortpvPort); ~HttpUtil(); voidreset(); };
构造函数有两个参数,host和port,子类BmsNetUtil继承它,并将host/port封装在里面,主程序调用BmsNetUtil时无需再指定host/port参数,这时应该这样写:
#pragmaonce #include#include #include"HttpUtil.h" usingnamespacestd; classBmsNetUtil:publicHttpUtil { protected: public: BmsNetUtil(); ~BmsNetUtil(); boollogin(); };
BmsNetUtil构造函数的实现:
BmsNetUtil::BmsNetUtil():HttpUtil(TEXT(C_SITE),C_PORT) {..... }
在构造函数后面加上:父类的构造语句就可以了...
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