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#include <iostream>

using namespace std;

class Subject {

public:

virtual void Request() = 0;

virtual ~Subject() { }

};

class ConcreteSubject :public Subject {

public:

void Request() {

cout << "ConcreteSubject::Request..." << endl;

}

};

class Proxy {

public:

Proxy(Subject* subject) {

_sub = subject;

}

void Reuqest() {

cout << "Proxy::Request..." << endl;

_sub->Request();

}

private:

Subject *_sub;

};

int main() {

Subject *sub = new ConcreteSubject();

Proxy *p = new Proxy(sub);

p->Reuqest();

delete sub;

delete p;

return 0;

}