装饰器模式

#include <iostream>

using namespace std;

//装饰器模式

装饰器模式（Decorator Pattern）允许向一个现有的对象添加新的功能，同时又不改变其结构。这种类型的设计模式属于结构型模式，它是作为现有的类的一个包装。

//基类

class hero

{

public:

    virtual void stack() = 0;

};

class zhangfei :public hero

{

public:

    virtual void stack()

    {

        cout<<"攻击力"<<500<<endl;

        cout<<"防御力"<<250<<endl;

        cout<<"速度"<<100<<endl;

    }

};

//装饰类

class zhangbashemao:public hero{

public:

    zhangbashemao(hero* her)

    {

        this->he = her;

    }

    //增加方法

    void zhangbashou()

    {

        cout<<"穿甲+"<<100<<endl;

    }

    virtual void stack()

    {

        he->stack();

        zhangbashou();

    }

public:

    hero* he;

};

void test01()

{

    hero* he = NULL;

    he = new zhangfei;

    he->stack();

    hero* zhangba = NULL;

    zhangba = new zhangbashemao(he);

    zhangba->stack();

}

int main()

{

    test01();

    cout << "Hello World!" << endl;

    return 0;

}