咖啡店收银系统"/>
运用装饰者模式用C++写的一个咖啡店收银系统
最近在学习设计模式中的装饰者模式，前面我的一篇博客“装饰者模式及C++代码实现”已经比较深入地解析了“什么叫装饰者模式”，以及在面向对象系统的设计中运用“装饰者模式”有什么妙处！ 装饰者模式通过组合的方式提供了一种给类增加职责的方法！
在下面我写的咖啡店收银系统中就恰当地运用了“装饰者模式”的思想。 假设现在有一个咖啡店里面有四种咖啡系列：黑咖啡，白咖啡，加味咖啡，拿铁咖啡。这四种咖啡中每一种咖啡都分为大杯和中杯还有小杯三种型号，并且每对应的一种型号的咖啡都有一个自定的价格！ 现在为了满足顾客对同一种咖啡系列的多种口味的需求，那么作为店主我把每一种咖啡都用奶油，糖和牛奶三种调料任意组合，每一个咖啡系列派生出八种咖啡。 这样用三种调料任意组合调制出来的咖啡每一种价格是不一样的！
现在的问题是面对上面这种情况，你会怎么设计这个系统？？ 有人会说用继承的方法不就行了嘛！ 但是本人认为对于这种情况用继承的方法来解决的话，有一个非常不好的问题！那就是对于每一种咖啡系列都得作为一个基类，然后分别从每一种咖啡系列的基类下派生出八个子类！ 这样做的话要建立的类是比较多的！每一种咖啡系类下面就有八个子类，那么四种咖啡系列的话，光是子类就得有32个！这样做系统的复杂性无疑是提高了很多，不利于以后系统的维护！ 此外，这样做的一个最严重的问题是：系统的扩展性比较差！ 假如现在咖啡店要增加一种咖啡系列并且还要增加一种调味品沙糖，那这个时候如果你以前是按照继承的方法设计的系统的话，你就该是很头痛了！尤其是要增加一种调味品沙糖！增加了一种砂糖的话，你前面的所有咖啡系统下面的子类都要更改，每个子类都要更改，这样的话你首先就要更改前面四种咖啡下面的每一个子类，你总共要更改32个子类！ 剩下的增加的一个咖啡系统下面的子类都要你自己一字一句去编写！ 显然这样做的话，你的工作量是非常大的！说的夸张点你的效率相对于高手来说是个负数！！而一开始我就用“装饰者模式”来架构整个系统的话，现在弄起来的话就轻松多了，我把每个一个咖啡系列看做是一个被装饰类，把每一种调料看做是一种装饰咖啡的装饰类！ 当我要增加一种咖啡系类或者增加一种调味品的时候，我只不过是增加一个被装饰类或者增加一个装饰类而已！ 这样对以前编写好的整个系统的影响是很小的，也就是说系统的耦合性比较的弱，模块与模块之间的独立性比较强！ 类的扩展性非常的好！ 这是非常符合面向对象系统设计所追求的“高内聚”，“低耦合”的目标的！
#include<iostream>
#include<string>
using namespace std;//抽象类，咖啡
class coffee
{
public:virtual float dabei_cost() = 0;virtual float zhongbei_cost() = 0;virtual float xiaobei_cost() = 0;
};//具体类，黑咖啡
class black_coffee :public coffee
{
public:virtual float dabei_cost() //大杯价格{return 15.0;}virtual float zhongbei_cost()//中杯价格{return 10.0;}virtual float xiaobei_cost()//小杯价格{return 5.0;}
};//具体类，白咖啡
class white_coffee :public coffee
{
public:virtual float dabei_cost()//大杯价格{return 18.0;}virtual float zhongbei_cost()//中杯价格{return 14.0;}virtual float xiaobei_cost()//小杯价格{return 10.0;}
};//具体类，加味咖啡
class flavored_coffee :public coffee
{
public:virtual float dabei_cost()//大杯价格{return 20.0;}virtual float zhongbei_cost()//中杯价格{return 15.0;}virtual float xiaobei_cost()//小杯价格{return 10.0;}
};//具体类，拿铁咖啡
class caffelatte :public coffee
{
public:virtual float dabei_cost()//大杯价格{return 25.0;}virtual float zhongbei_cost()//中杯价格{return 20.0;}virtual float xiaobei_cost()//小杯价格{return 15.0;}
};//装饰者类，给咖啡加入若干种调味品
class Add_Condiment :public coffee
{
public:void Decorate(coffee*cof){this->cof = cof;}
public:virtual float dabei_cost(){return (cof->dabei_cost());}virtual float zhongbei_cost(){return(cof->zhongbei_cost());}virtual float xiaobei_cost(){return(cof->xiaobei_cost());}
protected:coffee*cof;
};//给咖啡加牛奶
class has_milk :public Add_Condiment
{
public:float with_milk(){return 1.0;}
public:virtual float dabei_cost(){return(with_milk() + (Add_Condiment::dabei_cost()));}virtual float zhongbei_cost(){return(with_milk() + (Add_Condiment::zhongbei_cost()));}virtual float xiaobei_cost(){return(with_milk() + (Add_Condiment::xiaobei_cost()));}
};//给咖啡加糖
class has_sugar :public Add_Condiment
{
public:float with_sugar(){return 0.5;}
public:virtual float dabei_cost(){return(with_sugar() + (Add_Condiment::dabei_cost()));}virtual float zhongbei_cost(){return(with_sugar() + (Add_Condiment::zhongbei_cost()));}virtual float xiaobei_cost(){return(with_sugar() + (Add_Condiment::xiaobei_cost()));}
};//给咖啡加奶油
class has_cream :public Add_Condiment
{
public:float with_cream(){return 3.0;}
public:virtual float dabei_cost(){return(with_cream() + (Add_Condiment::dabei_cost()));}virtual float zhongbei_cost(){return(with_cream() + (Add_Condiment::zhongbei_cost()));}virtual float xiaobei_cost(){return(with_cream() + (Add_Condiment::xiaobei_cost()));}
};int main(void)
{cout << " 欢迎光临本店! " << endl;cout << "*******************************请选择咖啡系列********************************" << endl;cout << " ▕▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▏" << endl;cout << " ▕ 1.黑咖啡系列 2.白咖啡系列 3.加味咖啡系列 4.拿铁咖啡系列 ▏" << endl;cout << " ▕▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▏" << endl;int choise;cout << " 请输入数字选择对应的咖啡系列：";cin >> choise;switch (choise){case 1:{cout << " ▕▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▏" << endl;cout << " ▕ 黑咖啡系列有以下种类，请选择： ▏" << endl;cout << " ▕ 1.黑咖啡（纯） 2.黑咖啡+牛奶 3.黑咖啡+糖 4.黑咖啡+奶油 ▏" << endl;cout << " ▕ 5.黑咖啡+牛奶+糖 6.黑咖啡+牛奶+奶油 7.黑咖啡+糖+奶油 ▏" << endl;cout << " ▕ 8.黑咖啡+牛奶+糖+奶油 ▏" << endl;cout << " ▕▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▏" << endl;cout << " 请输入数字选择您想要的咖啡:";int a;cin >> a;switch (a){case 1:cout << " 请选择黑咖啡的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a1;cin >> a1;switch (a1){case 1:{coffee*c1 = new black_coffee;cout << endl << " 请付" << c1->dabei_cost() << "元！" << "谢谢！" << endl;delete c1; break;}case 2:{coffee*c2 = new black_coffee;cout << endl << " 请付" << c2->zhongbei_cost() << "元！" << "谢谢！" << endl;delete c2; break;}case 3:{coffee*c3 = new black_coffee;cout << endl << " 请付" << c3->xiaobei_cost() << "元！" << "谢谢！" << endl;delete c3; break;}default:printf("输入有误！\n");}break;case 2:cout << " 请选择黑咖啡+牛奶的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a2;cin >> a2;switch (a2){case 1:{coffee*b1 = new black_coffee;Add_Condiment*b2 = new has_milk;b2->Decorate(b1);cout << endl << " 请付" << b2->dabei_cost() << "元!" << "谢谢！" << endl;delete b1; delete b2; break;}case 2:{coffee*b3 = new black_coffee;Add_Condiment*b4 = new has_milk;b4->Decorate(b3);cout << endl << " 请付" << b4->zhongbei_cost() << "元" << "谢谢！" << endl;delete b3; delete b4; break;}case 3:{coffee*b5 = new black_coffee;Add_Condiment*b6 = new has_milk;b6->Decorate(b5);cout << endl << " 请付" << b6->xiaobei_cost() << "元" << "谢谢！" << endl;delete b5; delete b6; break;}default:printf("输入有误！\n");}break;case 3:cout << " 请选择黑咖啡+糖的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a3;cin >> a3;switch (a3){case 1:{coffee *d1 = new black_coffee;Add_Condiment*d2 = new has_sugar;d2->Decorate(d1);cout << endl << " 请付" << d2->dabei_cost() << "元！" << "谢谢！" << endl;delete d1; delete d2; break;}case 2:{coffee *d3 = new black_coffee;Add_Condiment *d4 = new has_sugar;d4->Decorate(d3);cout << endl << " 请付" << d4->zhongbei_cost() << "元！" << "谢谢！" << endl;delete d3; delete d4; break;}case 3:{coffee*d5 = new black_coffee;Add_Condiment*d6 = new has_sugar;d6->Decorate(d5);cout << endl << " 请付" << d6->xiaobei_cost() << "元！" << "谢谢！" << endl;delete d5; delete d6; break;}default:printf("输入有误！\n");}break;case 4:cout << " 请选择黑咖啡+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a4;cin >> a4;switch (a4){case 1:{coffee *e1 = new black_coffee;Add_Condiment*e2 = new has_cream;e2->Decorate(e1);cout << endl << " 请付" << e2->dabei_cost() << "元" << "谢谢！" << endl;delete e1; delete e2; break;}case 2:{coffee *e3 = new black_coffee;Add_Condiment*e4 = new has_cream;e4->Decorate(e3);cout << endl << " 请付" << e4->zhongbei_cost() << "元" << "谢谢！" << endl;delete e3; delete e4; break;}case 3:{coffee *e5 = new black_coffee;Add_Condiment*e6 = new has_cream;e6->Decorate(e5);cout << endl << " 请付" << e6->xiaobei_cost() << "元" << "谢谢！" << endl;delete e5; delete e6; break;}default:printf("输入有误！\n");}break;case 5:cout << " 请选择黑咖啡+牛奶+糖的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a5;cin >> a5;switch (a5){case 1:{coffee*f1 = new black_coffee;Add_Condiment*f2 = new has_milk;Add_Condiment*f3 = new has_sugar;f2->Decorate(f1);f3->Decorate(f2);cout << endl << " 请付" << f3->xiaobei_cost() << "元" << "谢谢！" << endl;delete f1; delete f2; delete f3; break;}case 2:{coffee*f4 = new black_coffee;Add_Condiment*f5 = new has_milk;Add_Condiment*f6 = new has_sugar;f5->Decorate(f4);f6->Decorate(f5);cout << endl << " 请付" << f6->zhongbei_cost() << "元" << "谢谢！" << endl;delete f4; delete f5; delete f6; break;}case 3:{coffee*f7 = new black_coffee;Add_Condiment*f8 = new has_milk;Add_Condiment*f9 = new has_sugar;f8->Decorate(f7);f9->Decorate(f8);cout << endl << " 请付" << f9->xiaobei_cost() << "元" << "谢谢！" << endl;delete f7; delete f8; delete f9; break;}default:printf("输入有误！\n");}break;case 6:cout << " 请选择黑咖啡+牛奶+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a6;cin >> a6;switch (a6){case 1:{coffee*g1 = new black_coffee;Add_Condiment*g2 = new has_milk;Add_Condiment*g3 = new has_cream;g2->Decorate(g1);g3->Decorate(g2);cout << endl << " 请付" << g3->dabei_cost() << "元" << "谢谢！" << endl;delete g1; delete g2; delete g3; break;}case 2:{coffee*g4 = new black_coffee;Add_Condiment*g5 = new has_milk;Add_Condiment*g6 = new has_cream;g5->Decorate(g4);g6->Decorate(g5);cout << endl << " 请付" << g6->zhongbei_cost() << "元" << "谢谢！" << endl;delete g4; delete g5; delete g6; break;}case 3:{coffee*g7 = new black_coffee;Add_Condiment*g8 = new has_milk;Add_Condiment*g9 = new has_cream;g8->Decorate(g7);g9->Decorate(g8);cout << endl << " 请付" << g9->xiaobei_cost() << "元" << "谢谢！" << endl;delete g7; delete g8; delete g9; break;}default:printf("输入有误！\n");}break;case 7:cout << " 请选择黑咖啡+糖+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a7;cin >> a7;switch (a7){case 1:{coffee*h1 = new black_coffee;Add_Condiment*h2 = new has_sugar;Add_Condiment*h3 = new has_cream;h2->Decorate(h1);h3->Decorate(h2);cout << endl << " 请付" << h3->dabei_cost() << "元" << "谢谢！" << endl;delete h1; delete h2; delete h3; break;}case 2:{coffee*h4 = new black_coffee;Add_Condiment*h5 = new has_sugar;Add_Condiment*h6 = new has_cream;h5->Decorate(h4);h6->Decorate(h5);cout << endl << " 请付" << h6->zhongbei_cost() << "元" << "谢谢！" << endl;delete h4; delete h5; delete h6; break;}case 3:{coffee*h7 = new black_coffee;Add_Condiment*h8 = new has_sugar;Add_Condiment*h9 = new has_cream;h8->Decorate(h7);h9->Decorate(h8);cout << endl << " 请付" << h9->xiaobei_cost() << "元" << "谢谢！" << endl;delete h7; delete h8; delete h9; break;}default:printf("输入有误！\n");}break;case 8:cout << " 请选择黑咖啡+牛奶+糖+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a8;cin >> a8;switch (a8){case 1:{coffee*i1 = new black_coffee;Add_Condiment*i2 = new has_milk;Add_Condiment*i3 = new has_sugar;Add_Condiment*i4 = new has_cream;i2->Decorate(i1);i3->Decorate(i2);i4->Decorate(i3);cout << endl << " 请付" << i4->dabei_cost() << "元" << "谢谢！" << endl;delete i1; delete i2; delete i3; delete i4; break;}case 2:{coffee*i5 = new black_coffee;Add_Condiment*i6 = new has_milk;Add_Condiment*i7 = new has_sugar;Add_Condiment*i8 = new has_cream;i6->Decorate(i5);i7->Decorate(i6);i8->Decorate(i7);cout << endl << " 请付" << i8->zhongbei_cost() << "元" << "谢谢！" << endl;delete i5; delete i6; delete i7; delete i8; break;}case 3:{coffee*i9 = new black_coffee;Add_Condiment*i10 = new has_milk;Add_Condiment*i11 = new has_sugar;Add_Condiment*i12 = new has_cream;i10->Decorate(i9);i11->Decorate(i10);i12->Decorate(i11);cout << endl << " 请付" << i12->xiaobei_cost() << "元" << "谢谢！" << endl;delete i9; delete i10; delete i11; delete i12; break;}default:printf("输入有误！\n");}break;default:printf("输入有误！\n");}}break;case 2:{cout << " ▕▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▏" << endl;cout << " ▕ 白咖啡系列有以下种类，请选择： ▏" << endl;cout << " ▕ 1.白咖啡（纯） 2.白咖啡+牛奶 3.白咖啡+糖 4.白咖啡+奶油 ▏" << endl;cout << " ▕ 5.白咖啡+牛奶+糖 6.白咖啡+牛奶+奶油 7.白咖啡+糖+奶油 ▏" << endl;cout << " ▕ 8.白咖啡+牛奶+糖+奶油 ▏" << endl;cout << " ▕▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▏" << endl;cout << " 请输入数字选择您想要的咖啡:";int b;cin >> b;switch (b){case 1:cout << " 请选择白咖啡的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a1;cin >> a1;switch (a1){case 1:{coffee*c1 = new white_coffee;cout << endl << " 请付" << c1->dabei_cost() << "元！" << "谢谢！" << endl;delete c1; break;}case 2:{coffee*c2 = new white_coffee;cout << endl << " 请付" << c2->zhongbei_cost() << "元！" << "谢谢！" << endl;delete c2; break;}case 3:{coffee*c3 = new white_coffee;cout << endl << " 请付" << c3->xiaobei_cost() << "元！" << "谢谢！" << endl;delete c3; break;}default:printf("输入有误！\n");}break;case 2:cout << " 请选择白咖啡+牛奶的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a2;cin >> a2;switch (a2){case 1:{coffee*b1 = new white_coffee;Add_Condiment*b2 = new has_milk;b2->Decorate(b1);cout << endl << " 请付" << b2->dabei_cost() << "元!" << "谢谢！" << endl;delete b1; delete b2; break;}case 2:{coffee*b3 = new white_coffee;Add_Condiment*b4 = new has_milk;b4->Decorate(b3);cout << endl << " 请付" << b4->zhongbei_cost() << "元" << "谢谢！" << endl;delete b3; delete b4; break;}case 3:{coffee*b5 = new white_coffee;Add_Condiment*b6 = new has_milk;b6->Decorate(b5);cout << endl << " 请付" << b6->xiaobei_cost() << "元" << "谢谢！" << endl;delete b5; delete b6; break;}default:printf("输入有误！\n");}break;case 3:cout << " 请选择白咖啡+糖的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a3;cin >> a3;switch (a3){case 1:{coffee *d1 = new white_coffee;Add_Condiment*d2 = new has_sugar;d2->Decorate(d1);cout << endl << " 请付" << d2->dabei_cost() << "元！" << "谢谢！" << endl;delete d1; delete d2; break;}case 2:{coffee *d3 = new white_coffee;Add_Condiment *d4 = new has_sugar;d4->Decorate(d3);cout << endl << " 请付" << d4->zhongbei_cost() << "元！" << "谢谢！" << endl;delete d3; delete d4; break;}case 3:{coffee*d5 = new white_coffee;Add_Condiment*d6 = new has_sugar;d6->Decorate(d5);cout << endl << " 请付" << d6->xiaobei_cost() << "元！" << "谢谢！" << endl;delete d5; delete d6; break;}default:printf("输入有误！\n");}break;case 4:cout << " 请选择白咖啡+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a4;cin >> a4;switch (a4){case 1:{coffee *e1 = new white_coffee;Add_Condiment*e2 = new has_cream;e2->Decorate(e1);cout << endl << " 请付" << e2->dabei_cost() << "元" << "谢谢！" << endl;delete e1; delete e2; break;}case 2:{coffee *e3 = new white_coffee;Add_Condiment*e4 = new has_cream;e4->Decorate(e3);cout << endl << " 请付" << e4->zhongbei_cost() << "元" << "谢谢！" << endl;delete e3; delete e4; break;}case 3:{coffee *e5 = new white_coffee;Add_Condiment*e6 = new has_cream;e6->Decorate(e5);cout << endl << " 请付" << e6->xiaobei_cost() << "元" << "谢谢！" << endl;delete e5; delete e6; break;}default:printf("输入有误！\n");}break;case 5:cout << " 请选择白咖啡+牛奶+糖的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a5;cin >> a5;switch (a5){case 1:{coffee*f1 = new white_coffee;Add_Condiment*f2 = new has_milk;Add_Condiment*f3 = new has_sugar;f2->Decorate(f1);f3->Decorate(f2);cout << endl << " 请付" << f3->xiaobei_cost() << "元" << "谢谢！" << endl;delete f1; delete f2; delete f3; break;}case 2:{coffee*f4 = new white_coffee;Add_Condiment*f5 = new has_milk;Add_Condiment*f6 = new has_sugar;f5->Decorate(f4);f6->Decorate(f5);cout << endl << " 请付" << f6->zhongbei_cost() << "元" << "谢谢！" << endl;delete f4; delete f5; delete f6; break;}case 3:{coffee*f7 = new white_coffee;Add_Condiment*f8 = new has_milk;Add_Condiment*f9 = new has_sugar;f8->Decorate(f7);f9->Decorate(f8);cout << endl << " 请付" << f9->xiaobei_cost() << "元" << "谢谢！" << endl;delete f7; delete f8; delete f9; break;}default:printf("输入有误！\n");}break;case 6:cout << " 请选择白咖啡+牛奶+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a6;cin >> a6;switch (a6){case 1:{coffee*g1 = new white_coffee;Add_Condiment*g2 = new has_milk;Add_Condiment*g3 = new has_cream;g2->Decorate(g1);g3->Decorate(g2);cout << endl << " 请付" << g3->dabei_cost() << "元" << "谢谢！" << endl;delete g1; delete g2; delete g3; break;}case 2:{coffee*g4 = new white_coffee;Add_Condiment*g5 = new has_milk;Add_Condiment*g6 = new has_cream;g5->Decorate(g4);g6->Decorate(g5);cout << endl << " 请付" << g6->zhongbei_cost() << "元" << "谢谢！" << endl;delete g4; delete g5; delete g6; break;}case 3:{coffee*g7 = new white_coffee;Add_Condiment*g8 = new has_milk;Add_Condiment*g9 = new has_cream;g8->Decorate(g7);g9->Decorate(g8);cout << endl << " 请付" << g9->xiaobei_cost() << "元" << "谢谢！" << endl;delete g7; delete g8; delete g9; break;}default:printf("输入有误！\n");}break;case 7:cout << " 请选择白咖啡+糖+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a7;cin >> a7;switch (a7){case 1:{coffee*h1 = new white_coffee;Add_Condiment*h2 = new has_sugar;Add_Condiment*h3 = new has_cream;h2->Decorate(h1);h3->Decorate(h2);cout << endl << " 请付" << h3->dabei_cost() << "元" << "谢谢！" << endl;delete h1; delete h2; delete h3; break;}case 2:{coffee*h4 = new white_coffee;Add_Condiment*h5 = new has_sugar;Add_Condiment*h6 = new has_cream;h5->Decorate(h4);h6->Decorate(h5);cout << endl << " 请付" << h6->zhongbei_cost() << "元" << "谢谢！" << endl;delete h4; delete h5; delete h6; break;}case 3:{coffee*h7 = new white_coffee;Add_Condiment*h8 = new has_sugar;Add_Condiment*h9 = new has_cream;h8->Decorate(h7);h9->Decorate(h8);cout << endl << " 请付" << h9->xiaobei_cost() << "元" << "谢谢！" << endl;delete h7; delete h8; delete h9; break;}default:printf("输入有误！\n");}break;case 8:cout << " 请选择白咖啡+牛奶+糖+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a8;cin >> a8;switch (a8){case 1:{coffee*i1 = new white_coffee;Add_Condiment*i2 = new has_milk;Add_Condiment*i3 = new has_sugar;Add_Condiment*i4 = new has_cream;i2->Decorate(i1);i3->Decorate(i2);i4->Decorate(i3);cout << endl << " 请付" << i4->dabei_cost() << "元" << "谢谢！" << endl;delete i1; delete i2; delete i3; delete i4; break;}case 2:{coffee*i5 = new white_coffee;Add_Condiment*i6 = new has_milk;Add_Condiment*i7 = new has_sugar;Add_Condiment*i8 = new has_cream;i6->Decorate(i5);i7->Decorate(i6);i8->Decorate(i7);cout << endl << " 请付" << i8->zhongbei_cost() << "元" << "谢谢！" << endl;delete i5; delete i6; delete i7; delete i8; break;}case 3:{coffee*i9 = new white_coffee;Add_Condiment*i10 = new has_milk;Add_Condiment*i11 = new has_sugar;Add_Condiment*i12 = new has_cream;i10->Decorate(i9);i11->Decorate(i10);i12->Decorate(i11);cout << endl << " 请付" << i12->xiaobei_cost() << "元" << "谢谢！" << endl;delete i9; delete i10; delete i11; delete i12; break;}default:printf("输入有误！\n");}break;default:printf("输入有误！\n");}}break;case 3:{cout << " ▕▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▏" << endl;cout << " ▕ 加味咖啡系列有以下种类，请选择： ▏" << endl;cout << " ▕ 1.加味咖啡（纯） 2.加味咖啡+牛奶 3.加味咖啡+糖 ▏" << endl;cout << " ▕ 4.加味咖啡+奶油 5.加味咖啡+牛奶+糖 6.加味咖啡+牛奶+奶油 ▏" << endl;cout << " ▕ 7.加味咖啡+糖+奶油 8.加味咖啡+牛奶+糖+奶油 ▏" << endl;cout << " ▕▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▏" << endl;cout << " 请输入数字选择您想要的咖啡:";int b;cin >> b;switch (b){case 1:cout << " 请选择加味咖啡的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a1;cin >> a1;switch (a1){case 1:{coffee*c1 = new flavored_coffee;cout << endl << " 请付" << c1->dabei_cost() << "元！" << "谢谢！" << endl;delete c1; break;}case 2:{coffee*c2 = new flavored_coffee;cout << endl << " 请付" << c2->zhongbei_cost() << "元！" << "谢谢！" << endl;delete c2; break;}case 3:{coffee*c3 = new flavored_coffee;cout << endl << " 请付" << c3->xiaobei_cost() << "元！" << "谢谢！" << endl;delete c3; break;}default:printf("输入有误！\n");}break;case 2:cout << " 请选择加味咖啡+牛奶的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a2;cin >> a2;switch (a2){case 1:{coffee*b1 = new flavored_coffee;Add_Condiment*b2 = new has_milk;b2->Decorate(b1);cout << endl << " 请付" << b2->dabei_cost() << "元!" << "谢谢！" << endl;delete b1; delete b2; break;}case 2:{coffee*b3 = new flavored_coffee;Add_Condiment*b4 = new has_milk;b4->Decorate(b3);cout << endl << " 请付" << b4->zhongbei_cost() << "元" << "谢谢！" << endl;delete b3; delete b4; break;}case 3:{coffee*b5 = new flavored_coffee;Add_Condiment*b6 = new has_milk;b6->Decorate(b5);cout << endl << " 请付" << b6->xiaobei_cost() << "元" << "谢谢！" << endl;delete b5; delete b6; break;}default:printf("输入有误！\n");}break;case 3:cout << " 请选择加味咖啡+糖的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a3;cin >> a3;switch (a3){case 1:{coffee *d1 = new flavored_coffee;Add_Condiment*d2 = new has_sugar;d2->Decorate(d1);cout << endl << " 请付" << d2->dabei_cost() << "元！" << "谢谢！" << endl;delete d1; delete d2; break;}case 2:{coffee *d3 = new flavored_coffee;Add_Condiment *d4 = new has_sugar;d4->Decorate(d3);cout << endl << " 请付" << d4->zhongbei_cost() << "元！" << "谢谢！" << endl;delete d3; delete d4; break;}case 3:{coffee*d5 = new flavored_coffee;Add_Condiment*d6 = new has_sugar;d6->Decorate(d5);cout << endl << " 请付" << d6->xiaobei_cost() << "元！" << "谢谢！" << endl;delete d5; delete d6; break;}default:printf("输入有误！\n");}break;case 4:cout << " 请选择加味咖啡+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a4;cin >> a4;switch (a4){case 1:{coffee *e1 = new flavored_coffee;Add_Condiment*e2 = new has_cream;e2->Decorate(e1);cout << endl << " 请付" << e2->dabei_cost() << "元" << "谢谢！" << endl;delete e1; delete e2; break;}case 2:{coffee *e3 = new flavored_coffee;Add_Condiment*e4 = new has_cream;e4->Decorate(e3);cout << endl << " 请付" << e4->zhongbei_cost() << "元" << "谢谢！" << endl;delete e3; delete e4; break;}case 3:{coffee *e5 = new flavored_coffee;Add_Condiment*e6 = new has_cream;e6->Decorate(e5);cout << endl << " 请付" << e6->xiaobei_cost() << "元" << "谢谢！" << endl;delete e5; delete e6; break;}default:printf("输入有误！\n");}break;case 5:cout << " 请选择加味咖啡+牛奶+糖的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a5;cin >> a5;switch (a5){case 1:{coffee*f1 = new flavored_coffee;Add_Condiment*f2 = new has_milk;Add_Condiment*f3 = new has_sugar;f2->Decorate(f1);f3->Decorate(f2);cout << endl << " 请付" << f3->xiaobei_cost() << "元" << "谢谢！" << endl;delete f1; delete f2; delete f3; break;}case 2:{coffee*f4 = new flavored_coffee;Add_Condiment*f5 = new has_milk;Add_Condiment*f6 = new has_sugar;f5->Decorate(f4);f6->Decorate(f5);cout << endl << " 请付" << f6->zhongbei_cost() << "元" << "谢谢！" << endl;delete f4; delete f5; delete f6; break;}case 3:{coffee*f7 = new flavored_coffee;Add_Condiment*f8 = new has_milk;Add_Condiment*f9 = new has_sugar;f8->Decorate(f7);f9->Decorate(f8);cout << endl << " 请付" << f9->xiaobei_cost() << "元" << "谢谢！" << endl;delete f7; delete f8; delete f9; break;}default:printf("输入有误！\n");}break;case 6:cout << " 请选择加味咖啡+牛奶+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a6;cin >> a6;switch (a6){case 1:{coffee*g1 = new flavored_coffee;Add_Condiment*g2 = new has_milk;Add_Condiment*g3 = new has_cream;g2->Decorate(g1);g3->Decorate(g2);cout << endl << " 请付" << g3->dabei_cost() << "元" << "谢谢！" << endl;delete g1; delete g2; delete g3; break;}case 2:{coffee*g4 = new flavored_coffee;Add_Condiment*g5 = new has_milk;Add_Condiment*g6 = new has_cream;g5->Decorate(g4);g6->Decorate(g5);cout << endl << " 请付" << g6->zhongbei_cost() << "元" << "谢谢！" << endl;delete g4; delete g5; delete g6; break;}case 3:{coffee*g7 = new flavored_coffee;Add_Condiment*g8 = new has_milk;Add_Condiment*g9 = new has_cream;g8->Decorate(g7);g9->Decorate(g8);cout << endl << " 请付" << g9->xiaobei_cost() << "元" << "谢谢！" << endl;delete g7; delete g8; delete g9; break;}default:printf("输入有误！\n");}break;case 7:cout << " 请选择加味咖啡+糖+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a7;cin >> a7;switch (a7){case 1:{coffee*h1 = new flavored_coffee;Add_Condiment*h2 = new has_sugar;Add_Condiment*h3 = new has_cream;h2->Decorate(h1);h3->Decorate(h2);cout << endl << " 请付" << h3->dabei_cost() << "元" << "谢谢！" << endl;delete h1; delete h2; delete h3; break;}case 2:{coffee*h4 = new flavored_coffee;Add_Condiment*h5 = new has_sugar;Add_Condiment*h6 = new has_cream;h5->Decorate(h4);h6->Decorate(h5);cout << endl << " 请付" << h6->zhongbei_cost() << "元" << "谢谢！" << endl;delete h4; delete h5; delete h6; break;}case 3:{coffee*h7 = new flavored_coffee;Add_Condiment*h8 = new has_sugar;Add_Condiment*h9 = new has_cream;h8->Decorate(h7);h9->Decorate(h8);cout << endl << " 请付" << h9->xiaobei_cost() << "元" << "谢谢！" << endl;delete h7; delete h8; delete h9; break;}default:printf("输入有误！\n");}break;case 8:cout << " 请选择加味咖啡+牛奶+糖+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a8;cin >> a8;switch (a8){case 1:{coffee*i1 = new flavored_coffee;Add_Condiment*i2 = new has_milk;Add_Condiment*i3 = new has_sugar;Add_Condiment*i4 = new has_cream;i2->Decorate(i1);i3->Decorate(i2);i4->Decorate(i3);cout << endl << " 请付" << i4->dabei_cost() << "元" << "谢谢！" << endl;delete i1; delete i2; delete i3; delete i4; break;}case 2:{coffee*i5 = new flavored_coffee;Add_Condiment*i6 = new has_milk;Add_Condiment*i7 = new has_sugar;Add_Condiment*i8 = new has_cream;i6->Decorate(i5);i7->Decorate(i6);i8->Decorate(i7);cout << endl << " 请付" << i8->zhongbei_cost() << "元" << "谢谢！" << endl;delete i5; delete i6; delete i7; delete i8; break;}case 3:{coffee*i9 = new flavored_coffee;Add_Condiment*i10 = new has_milk;Add_Condiment*i11 = new has_sugar;Add_Condiment*i12 = new has_cream;i10->Decorate(i9);i11->Decorate(i10);i12->Decorate(i11);cout << endl << " 请付" << i12->xiaobei_cost() << "元" << "谢谢！" << endl;delete i9; delete i10; delete i11; delete i12; break;}default:printf("输入有误！\n");}break;default:printf("输入有误！\n");}}break;case 4:{cout << " ▕▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▏" << endl;cout << " ▕ 拿铁咖啡系列有以下种类，请选择： ▏" << endl;cout << " ▕ 1.拿铁咖啡（纯） 2.拿铁咖啡+牛奶 3.拿铁咖啡+糖 ▏" << endl;cout << " ▕ 4.拿铁咖啡+奶油 5.拿铁咖啡+牛奶+糖 6.拿铁咖啡+牛奶+奶油 ▏" << endl;cout << " ▕ 7.拿铁咖啡+糖+奶油 8.拿铁咖啡+牛奶+糖+奶油 ▏" << endl;cout << " ▕▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▏" << endl;cout << " 请输入数字选择您想要的咖啡:";int b;cin >> b;switch (b){case 1:cout << " 请选择拿铁咖啡的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a1;cin >> a1;switch (a1){case 1:{coffee*c1 = new caffelatte;cout << endl << " 请付" << c1->dabei_cost() << "元！" << "谢谢！" << endl;delete c1; break;}case 2:{coffee*c2 = new caffelatte;cout << endl << " 请付" << c2->zhongbei_cost() << "元！" << "谢谢！" << endl;delete c2; break;}case 3:{coffee*c3 = new caffelatte;cout << endl << " 请付" << c3->xiaobei_cost() << "元！" << "谢谢！" << endl;delete c3; break;}default:printf("输入有误！\n");}break;case 2:cout << " 请选择拿铁咖啡+牛奶的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a2;cin >> a2;switch (a2){case 1:{coffee*b1 = new caffelatte;Add_Condiment*b2 = new has_milk;b2->Decorate(b1);cout << endl << " 请付" << b2->dabei_cost() << "元!" << "谢谢！" << endl;delete b1; delete b2; break;}case 2:{coffee*b3 = new caffelatte;Add_Condiment*b4 = new has_milk;b4->Decorate(b3);cout << endl << " 请付" << b4->zhongbei_cost() << "元" << "谢谢！" << endl;delete b3; delete b4; break;}case 3:{coffee*b5 = new caffelatte;Add_Condiment*b6 = new has_milk;b6->Decorate(b5);cout << endl << " 请付" << b6->xiaobei_cost() << "元" << "谢谢！" << endl;delete b5; delete b6; break;}default:printf("输入有误！\n");}break;case 3:cout << " 请选择拿铁咖啡+糖的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a3;cin >> a3;switch (a3){case 1:{coffee *d1 = new caffelatte;Add_Condiment*d2 = new has_sugar;d2->Decorate(d1);cout << endl << " 请付" << d2->dabei_cost() << "元！" << "谢谢！" << endl;delete d1; delete d2; break;}case 2:{coffee *d3 = new caffelatte;Add_Condiment *d4 = new has_sugar;d4->Decorate(d3);cout << endl << " 请付" << d4->zhongbei_cost() << "元！" << "谢谢！" << endl;delete d3; delete d4; break;}case 3:{coffee*d5 = new caffelatte;Add_Condiment*d6 = new has_sugar;d6->Decorate(d5);cout << endl << " 请付" << d6->xiaobei_cost() << "元！" << "谢谢！" << endl;delete d5; delete d6; break;}default:printf("输入有误！\n");}break;case 4:cout << " 请选择拿铁咖啡+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a4;cin >> a4;switch (a4){case 1:{coffee *e1 = new caffelatte;Add_Condiment*e2 = new has_cream;e2->Decorate(e1);cout << endl << " 请付" << e2->dabei_cost() << "元" << "谢谢！" << endl;delete e1; delete e2; break;}case 2:{coffee *e3 = new caffelatte;Add_Condiment*e4 = new has_cream;e4->Decorate(e3);cout << endl << " 请付" << e4->zhongbei_cost() << "元" << "谢谢！" << endl;delete e3; delete e4; break;}case 3:{coffee *e5 = new caffelatte;Add_Condiment*e6 = new has_cream;e6->Decorate(e5);cout << endl << " 请付" << e6->xiaobei_cost() << "元" << "谢谢！" << endl;delete e5; delete e6; break;}default:printf("输入有误！\n");}break;case 5:cout << " 请选择拿铁咖啡+牛奶+糖的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a5;cin >> a5;switch (a5){case 1:{coffee*f1 = new caffelatte;Add_Condiment*f2 = new has_milk;Add_Condiment*f3 = new has_sugar;f2->Decorate(f1);f3->Decorate(f2);cout << endl << " 请付" << f3->xiaobei_cost() << "元" << "谢谢！" << endl;delete f1; delete f2; delete f3; break;}case 2:{coffee*f4 = new caffelatte;Add_Condiment*f5 = new has_milk;Add_Condiment*f6 = new has_sugar;f5->Decorate(f4);f6->Decorate(f5);cout << endl << " 请付" << f6->zhongbei_cost() << "元" << "谢谢！" << endl;delete f4; delete f5; delete f6; break;}case 3:{coffee*f7 = new caffelatte;Add_Condiment*f8 = new has_milk;Add_Condiment*f9 = new has_sugar;f8->Decorate(f7);f9->Decorate(f8);cout << endl << " 请付" << f9->xiaobei_cost() << "元" << "谢谢！" << endl;delete f7; delete f8; delete f9; break;}default:printf("输入有误！\n");}break;case 6:cout << " 请选择拿铁咖啡+牛奶+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a6;cin >> a6;switch (a6){case 1:{coffee*g1 = new caffelatte;Add_Condiment*g2 = new has_milk;Add_Condiment*g3 = new has_cream;g2->Decorate(g1);g3->Decorate(g2);cout << endl << " 请付" << g3->dabei_cost() << "元" << "谢谢！" << endl;delete g1; delete g2; delete g3; break;}case 2:{coffee*g4 = new caffelatte;Add_Condiment*g5 = new has_milk;Add_Condiment*g6 = new has_cream;g5->Decorate(g4);g6->Decorate(g5);cout << endl << " 请付" << g6->zhongbei_cost() << "元" << "谢谢！" << endl;delete g4; delete g5; delete g6; break;}case 3:{coffee*g7 = new caffelatte;Add_Condiment*g8 = new has_milk;Add_Condiment*g9 = new has_cream;g8->Decorate(g7);g9->Decorate(g8);cout << endl << " 请付" << g9->xiaobei_cost() << "元" << "谢谢！" << endl;delete g7; delete g8; delete g9; break;}default:printf("输入有误！\n");}break;case 7:cout << " 请选择拿铁咖啡+糖+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a7;cin >> a7;switch (a7){case 1:{coffee*h1 = new caffelatte;Add_Condiment*h2 = new has_sugar;Add_Condiment*h3 = new has_cream;h2->Decorate(h1);h3->Decorate(h2);cout << endl << " 请付" << h3->dabei_cost() << "元" << "谢谢！" << endl;delete h1; delete h2; delete h3; break;}case 2:{coffee*h4 = new caffelatte;Add_Condiment*h5 = new has_sugar;Add_Condiment*h6 = new has_cream;h5->Decorate(h4);h6->Decorate(h5);cout << endl << " 请付" << h6->zhongbei_cost() << "元" << "谢谢！" << endl;delete h4; delete h5; delete h6; break;}case 3:{coffee*h7 = new caffelatte;Add_Condiment*h8 = new has_sugar;Add_Condiment*h9 = new has_cream;h8->Decorate(h7);h9->Decorate(h8);cout << endl << " 请付" << h9->xiaobei_cost() << "元" << "谢谢！" << endl;delete h7; delete h8; delete h9; break;}default:printf("输入有误！\n");}break;case 8:cout << " 请选择拿铁咖啡+牛奶+糖+奶油的型号：" << endl;cout << " 1.大杯 2.中杯 3.小杯" << endl;cout << " 请输入对应的数字选择您想要的型号：";int a8;cin >> a8;switch (a8){case 1:{coffee*i1 = new caffelatte;Add_Condiment*i2 = new has_milk;Add_Condiment*i3 = new has_sugar;Add_Condiment*i4 = new has_cream;i2->Decorate(i1);i3->Decorate(i2);i4->Decorate(i3);cout << endl << " 请付" << i4->dabei_cost() << "元" << "谢谢！" << endl;delete i1; delete i2; delete i3; delete i4; break;}case 2:{coffee*i5 = new caffelatte;Add_Condiment*i6 = new has_milk;Add_Condiment*i7 = new has_sugar;Add_Condiment*i8 = new has_cream;i6->Decorate(i5);i7->Decorate(i6);i8->Decorate(i7);cout << endl << " 请付" << i8->zhongbei_cost() << "元" << "谢谢！" << endl;delete i5; delete i6; delete i7; delete i8; break;}case 3:{coffee*i9 = new caffelatte;Add_Condiment*i10 = new has_milk;Add_Condiment*i11 = new has_sugar;Add_Condiment*i12 = new has_cream;i10->Decorate(i9);i11->Decorate(i10);i12->Decorate(i11);cout << endl << " 请付" << i12->xiaobei_cost() << "元" << "谢谢！" << endl;delete i9; delete i10; delete i11; delete i12; break;}default:printf("输入有误！\n");}break;default:printf("输入有误！\n");}}break;default:printf("输入有误！\n");}system("pause");return 0;
}
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