工厂模式（厨师）

最新推荐文章于 2021-06-06 19:51:33 发布

原创最新推荐文章于 2021-06-06 19:51:33 发布 · 208 阅读

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本文通过C++代码示例，介绍了策略模式的基本概念及应用。策略模式是一种行为设计模式，它使你能在运行时改变对象的行为。文章展示了如何使用抽象基类和派生类来实现不同的策略，并通过具体实例演示了策略模式的灵活性。

//示意图略

//自我练习不具备参考价值

#include<iostream>
using namespace std;

class Food
{
public:
virtual void message()
{
cout<<"this is food"<<endl;
}
};

class meat : public Food
{
virtual void message()
{
cout<<"This is meat"<<endl;
}
};

class fish : public Food
{
virtual void message()
{
cout<<"This is fish"<<endl;
}
};

class g_meat:public meat
{
void message()
{
cout<<"This is g_meat"<<endl;
}
};

class y_meat:public meat
{
void message()
{
cout<<"This is y_meat"<<endl;
}
};

class g_fish:public fish
{
void message()
{
cout<<"This is g_fish"<<endl;
}
};

class y_fish:public fish
{
void message()
{
cout<<"This is y_fish"<<endl;
}
};

class Cooker{
public:
virtual Food* cook_meat()=0;
virtual Food* cook_fish()=0;
};

class gCooker : public Cooker
{
public:
Food* cook_meat()
{
return new g_meat();
}
Food* cook_fish()
{
return new g_fish();
}
};

class yCooker : public Cooker
{
public:
Food* cook_meat()
{
return new y_meat();
}
Food* cook_fish()
{
return new y_fish();
}
};
int main()
{
gCooker gcooker;
yCooker ycooker;

Food * food1 = gcooker.cook_meat();
food1->message();
Food * food2 = gcooker.cook_fish();
food2->message();
Food * food3 = ycooker.cook_meat();
food3->message();
Food * food4 = ycooker.cook_fish();
food4->message();

delete food1;
delete food2;
delete food3;
delete food4;
return 1;
}