C++类继承之子类调用父类的构造函数的实例详解

#pragma once  #include <windows.h> #include <string> using namespace std; class HttpUtil { private:   LPVOID hInternet;   LPVOID hConnect;   LPVOID hRequest;  protected:  wchar_t * mHostName;  short mPort;  string sendRequest(WCHAR * pvHostName, short pvPort, WCHAR * pvUrl, WCHAR * pvMethod, char * pvPostData, int pvPostDataLen);  public:   HttpUtil(wchar_t * pvHostName, short pvPort);   ~HttpUtil();   void reset();  }; 

#pragma once  #include <windows.h> #include <string> #include "HttpUtil.h" using namespace std;  class BmsNetUtil :public HttpUtil { protected:  public:   BmsNetUtil();   ~BmsNetUtil();   bool login(); }; 

BmsNetUtil::BmsNetUtil():HttpUtil(TEXT(C_SITE),C_PORT) { ..... }