设计模式-装饰模式

应用场景：
动态地给一个对象添加一些额外的职责

代码实现：

#include<iostream>
using namespace std;
#include <string>
class Person
{
private:
	string szName; 
public:
	Person() {}
	Person(string name)
	{
		szName = name;
	}
public:
	virtual void Display()
	{
		cout << "i am " << szName << endl;
	}
};

class finary :public Person
{
protected:
	Person *peroson;
	virtual void DecoratePerson(Person *peroson)
	{
		this->peroson = peroson;
	}
	virtual void Display()
	{
		cout << "finary" << endl;
		peroson->Display();
	}
};

class shirt :public finary
{
public:
	virtual void DecoratePerson(Person *peroson)
	{
		this->peroson = peroson;
	}
	virtual void Display()
	{
		cout << "shirt" << endl;
		peroson->Display();
	}
};

class socket :public finary
{
public:
	virtual void DecoratePerson(Person *peroson)
	{
		this->peroson = peroson;
	}
	virtual void Display()
	{
		cout << "socket" << endl;
		peroson->Display();
	}
};

int main()
{
	Person* p = new Person("小李");
	shirt* sh = new shirt;
	socket* s = new socket;
	sh->DecoratePerson(p);
	s->DecoratePerson(sh);
	s->Display();

	delete s;
	delete sh;
	delete p;
	return 0;
}