设计模式-代理模式

代理模式通过包含一个派生类的方法并且添加自己的方法。

代码实现：

#include<iostream>

using namespace std;

class Base
{
public:
	virtual void DoingSomething() = 0;
};

class NewPeople :public Base
{
public:
	void DoingSomething()
	{
		cout << "NewPeople" << endl;
	}
};

class OldPeople :public Base
{
public:
	void DoingSomething()
	{
		mNewPeople.DoingSomething();
		cout << "OldPeople" << endl;
	}
private:
	NewPeople mNewPeople;
};



int main()
{
	Base* base = nullptr;
	base = new OldPeople;
	base->DoingSomething();

	delete base;

	return system("pause");
}