多态案例二-制作饮品(黑马程序员) 设计模式 模板方法

#include <iostream>
using namespace std;

class AbstractDrinking
{
    
    
public:
    // 纯虚函数  子类中必须重写 否则无法实例化对象
    virtual void Boil() = 0;
    virtual void Brew() = 0;
    virtual void PourInCup() = 0;
    virtual void PutSomething() = 0;
    void MakeDrink(){
    
    
        Boil();
        Brew();
        PourInCup();
        PutSomething();
    }
};

class Coffee : public  AbstractDrinking
{
    
    
public:
    virtual void Boil()
    {
    
    
        cout << "煮怡宝矿泉水!" << endl;
    }
    
    virtual void Brew()
    {
    
    
        cout << "冲泡咖啡!" << endl;
    }

    virtual void PourInCup()
    {
    
    
        cout << "将咖啡倒入杯中!" << endl;
    }

    virtual void PutSomething()
    {
    
    
        cout << "加入糖和牛奶!" << endl;
    }

};

class Tea : public  AbstractDrinking
{
    
    
public:
    virtual void Boil()
    {
    
    
        cout << "煮康师傅矿泉水!" << endl;
    }
    
    virtual void Brew()
    {
    
    
        cout << "冲泡茶叶!" << endl;
    }

    virtual void PourInCup()
    {
    
    
        cout << "将茶叶倒入杯中!" << endl;
    }

    virtual void PutSomething()
    {
    
    
        cout << "加入柠檬!" << endl;
    }

};

void doWork(AbstractDrinking* abs)
{
    
    
    abs->MakeDrink();
    delete abs;
}

void test01()
{
    
    
    AbstractDrinking* c = new Coffee;
    doWork(c);

    cout << "---------------" << endl;
    doWork(new Tea);
}

int main()
{
    
    
    test01();
    return 0;
}