//Proxy.h#ifndef _PROXY_H_#define _PROXY_H_class Subject{  public:  virtual ~Subject();  virtual void Request() = 0;  protected:  Subject();  private:};class ConcreteSubject:public Subject{  public:  ConcreteSubject();  ~ConcreteSubject();  void Request();  protected:  private:};class Proxy{  public:  Proxy();  Proxy(Subject* sub);  ~Proxy();  void Request();  protected:  private:  Subject* _sub;};#endif //~_PROXY_H_

//Proxy.cpp#include "Proxy.h"#include <iostream>using namespace std;Subject::Subject(){}Subject::~Subject(){}ConcreteSubject::ConcreteSubject(){}ConcreteSubject::~ConcreteSubject(){}void ConcreteSubject::Request(){  cout<<"ConcreteSubject......request  ...."<<endl;}Proxy::Proxy(){}Proxy::Proxy(Subject* sub){  _sub = sub;}Proxy::~Proxy(){  delete _sub;}void Proxy::Request(){  cout<<"Proxy request...."<<endl;  _sub->Request();}

//main.cpp#include "Proxy.h"#include <iostream>using namespace std;int main(int argc,char* argv[]){   Subject* sub = new ConcreteSubject();  Proxy* p = new Proxy(sub);  p->Request();  return 0;}

#include <iostream> #include <string> using namespace std;  class Receiver { private:   string name;  public:   Receiver(string name):name(name)   {    }   string GetName()   {     return name;   } };  class Subject { public:   virtual void display(){} };  class Sender:public Subject {   Receiver *someone; public:   void SetReceiver(Receiver *someone)   {     this->someone = someone;   }   virtual void display()   {     cout<<"i hate you:" << someone->GetName()<<endl;   } };  class Proxy:public Subject { public:   Subject *realobject;    void SetClient(Subject *client)   {     this->realobject = client;   }    void display()   {     realobject->display();   } };  int main() {   Receiver *recv = new Receiver("nobody");   Sender *obj  = new Sender;   obj->SetReceiver(recv);   Proxy *proxy = new Proxy;   proxy->SetClient(obj);    proxy->display();    system("pause");   return 0; }