java实现肯德基收银系统

参考肯德基官网的信息模拟肯德基快餐店的收银系统，合理使用c++或java或python结合设计模式（2种以上）至少实现系统的以下功能：

1.正常餐品结算和找零。

2.基本套餐结算和找零。

3.使用优惠券购买餐品结算和找零。

4.可在一定时间段参与店内活动（自行设计或参考官网信息）。

5.模拟打印小票的功能（写到文件中）。

小票信息保存

class print{ 
 string s=""; //存订单信息
}

食物工厂

interface foodfactory{
 public hamburger createhamburger(print s,int kind,int num); //生产汉堡包
 public drink createdrink(print s,int kind,int num);  //生产饮品
 public chicken createchicken(print s,int kind,int num);  //生产鸡肉类
 public sweetmeats createsweetmeats(print s,int kind,int num); //生产甜品
 public snack createsnack(print s,int kind,int num);  //生产小吃
 public frenchfries createfrenchfries(print s,int kind,int num); //生产薯条
 public setmeal createsetmeal(print s,int kind,int num);  //生产套餐
}

具体食物工厂

interface hamburger{  
 public double price(int num);
}
interface drink{
 public double price(int num);
 
}
interface chicken{
 public double price(int num); 
}
interface sweetmeats{
 public double price(int num);
}
interface snack{
 public double price(int num); 
}
interface frenchfries{
 public double price(int num); 
}
interface setmeal{
 public double price(int num);
}

具体食物

//汉堡
//奥尔良烤堡
class hamburger_1 implements hamburger{
 public double price(int num)
 {
 system.out.println("奥尔良烤堡"+" "+" 数量："+num+" "+"合计:"+(num*8));
 return num*8; //返回价格
 }
}
//香辣鸡腿堡
class hamburger_2 implements hamburger{ 
 public double price(int num)
 {
 system.out.println("香辣鸡腿堡"+" "+" 数量："+num+" "+"合计:"+(num*9));
 return num*9;
 }
}
//劲脆鸡腿堡
class hamburger_3 implements hamburger{ 
 public double price(int num)
 {
 system.out.println("劲脆鸡腿堡"+" "+" 数量："+num+" "+"合计:"+(num*10));
 return num*10;
 }
}
//饮品
//橙汁
class drink_1 implements drink{
 public double price(int num)
 {
 system.out.println("橙汁"+" "+" 数量："+num+" "+"合计:"+(num*7));
 return num*7; //返回价格
 }
}
//百事可乐
class drink_2 implements drink{
 public double price(int num)
 {
 system.out.println("百事可乐"+" "+" 数量："+num+" "+"合计:"+(num*8));
 return num*8;
 } 
}
//百威啤酒
class drink_3 implements drink{
 public double price(int num)
 {
 system.out.println("百威啤酒"+" "+" 数量："+num+" "+"合计:"+(num*9));
 return num*9;
 }
}
//鸡肉类
//老北京鸡肉卷
class chicken_1 implements chicken{
 public double price(int num)
 {
 system.out.println("老北京鸡肉卷"+" "+"数量："+num+" "+"合计:"+(num*9));
 return num*9; //返回价格
 }
}
//香辣鸡翅
class chicken_2 implements chicken{
 public double price(int num)
 {
 system.out.println("香辣鸡翅"+" "+"数量："+num+" "+"合计:"+(num*13));
 return num*13;
 }
}
//鸡排
class chicken_3 implements chicken{
 public double price(int num)
 {
 system.out.println("鸡排"+" "+"数量："+num+" "+"合计:"+(num*10));
 return num*10;
 }
}
//甜品
//原味圣代
class sweetmeats_1 implements sweetmeats{
 public double price(int num)
 {
 system.out.println("原味圣代"+" "+"数量："+num+" "+"合计:"+(num*9));
 return num*9; //返回价格
 }
}
//葡式蛋挞
class sweetmeats_2 implements sweetmeats{
 public double price(int num)
 {
 system.out.println("葡式蛋挞"+" "+"数量："+num+" "+"合计:"+(num*12));
 return num*12;
 }
}
//巧克力味华夫
class sweetmeats_3 implements sweetmeats{
 public double price(int num)
 {
 system.out.println("巧克力味华夫"+" "+"数量："+num+" "+"合计:"+(num*10));
 return num*10;
 }
}
//小吃
//蔬菜沙拉
class snack_1 implements snack{
 public double price(int num)
 {
 system.out.println("蔬菜沙拉"+" "+"数量："+num+" "+"合计:"+(num*10));
 return num*10; //返回价格
 }
}
//醇香土豆泥
class snack_2 implements snack{
 public double price(int num)
 {
 system.out.println("醇香土豆泥"+" "+"数量："+num+" "+"合计:"+(num*11));
 return num*11;
 } 
}
//香甜粟米棒
class snack_3 implements snack{
 public double price(int num)
 {
 system.out.println("香甜粟米棒"+" "+"数量："+num+" "+"合计:"+(num*6));
 return num*6;
 }
}
//薯条
//波纹霸王薯条
class frenchfries_1 implements frenchfries{
 public double price(int num)
 {
 system.out.println("波纹霸王薯条"+" "+"数量："+num+" "+"合计:"+(num*12));
 return num*12; //返回价格
 } 
}
//套餐
//套餐1
class setmeal_1 implements setmeal{
 public double price(int num) {
 system.out.println("香辣鸡翅+百事可乐"+" "+"数量："+num+" "+"合计:"+(num*17));
 return num*17;
 }
}
//套餐2
class setmeal_2 implements setmeal{
 public double price(int num) {
 system.out.println("劲脆鸡腿堡+橙汁"+" "+"数量："+num+" "+"合计:"+(num*15));
 return num*15;
 }
}
//套餐3
class setmeal_3 implements setmeal{
 public double price(int num) {
 system.out.println("香辣鸡腿堡+百威啤酒+波纹霸王薯条"+" "+"数量："+num+" "+"合计:"+(num*25));
 return num*25;
 }
}

生产具体食物

//生产具体食物
class createfood implements foodfactory{
 print p=new print();
 public hamburger createhamburger(print s,int kind,int num) {
 if(kind==1){
  s.s=s.s+"\n"+"奥尔良汉堡 单价:"+"8"+" 数量:"+num+" 合计:"+(num*8); //将信息保存至s中
  return new hamburger_1();}
 else if(kind==2) {
  s.s=s.s+"\n"+"香辣鸡腿堡 单价:"+"9"+" 数量:"+num+" 合计:"+(num*9);
  return new hamburger_2();}
 else if(kind==3) {
  s.s=s.s+"\n"+"劲脆鸡腿堡 单价:"+"10"+" 数量:"+num+" 合计:"+(num*10);
  return new hamburger_3();}
 else return null;
 }
 public drink createdrink(print s,int kind,int num) {
 if(kind==1) {
  s.s=s.s+"\n"+"橙汁 单价:"+"7"+" 数量:"+num+" 合计:"+(num*7); //将信息保存至s中
  return new drink_1();}
 else if(kind==2) {
  s.s=s.s+"\n"+"百事可乐 单价:"+"8"+" 数量:"+num+" 合计:"+(num*8);
  return new drink_2();}
 else if(kind==3) {
  s.s=s.s+"\n"+"百威啤酒 单价:"+"9"+" 数量:"+num+" 合计:"+(num*9);
  return new drink_3();}
 else return null;
 }
 public chicken createchicken(print s,int kind,int num) {
 if(kind==1) {
  s.s=s.s+"\n"+"老北京鸡肉卷 单价："+"9"+" 数量"+num+" 合计:"+(num*9); //将信息保存至s中
  return new chicken_1();}
 else if(kind==2) {
  s.s=s.s+"\n"+"香辣鸡翅 单价："+"13"+" 数量"+num+" 合计:"+(num*13);
  return new chicken_2();}
 else if(kind==3) {
  s.s=s.s+"\n"+"鸡排 单价："+"10"+" 数量"+num+" 合计:"+(num*10);
  return new chicken_3();}
 else return null;
 } 
 public sweetmeats createsweetmeats(print s,int kind,int num) {
 if(kind==1) {
  s.s=s.s+"\n"+"原味圣代 单价："+"9"+" 数量"+num+" 合计:"+(num*9); //将信息保存至s中
  return new sweetmeats_1();}
 else if(kind==2) {
  s.s=s.s+"\n"+"葡式蛋挞 单价："+"12"+" 数量"+num+" 合计:"+(num*12);
  return new sweetmeats_2();}
 else if(kind==3) {
  s.s=s.s+"\n"+"巧克力味华夫 单价："+"10"+" 数量"+num+" 合计:"+(num*10);
  return new sweetmeats_3();}
 else return null;
 }
 public snack createsnack(print s,int kind,int num) {
 if(kind==1) {
  s.s=s.s+"\n"+"蔬菜沙拉 单价："+"10"+" 数量"+num+" 合计:"+(num*10); //将信息保存至s中
  return new snack_1();}
 else if(kind==2) {
  s.s=s.s+"\n"+"醇香土豆泥 单价："+"11"+" 数量"+num+" 合计:"+(num*11);
  return new snack_2();}
 else if(kind==3) {
  s.s=s.s+"\n"+"香甜粟米棒 单价："+"6"+" 数量"+num+" 合计:"+(num*6);
  return new snack_3();}
 else return null;
 }
 public frenchfries createfrenchfries(print s,int kind,int num){
 if(kind==1) {
  s.s=s.s+"\n"+"波纹霸王薯条 单价："+"12"+" 数量"+num+" 合计:"+(num*12); //将信息保存至s中
  return new frenchfries_1();}
 else return null;
 }
 public setmeal createsetmeal(print s,int kind, int num) {
 if(kind==1) {
  s.s=s.s+"\n"+"套餐1 单价："+"17"+" 数量"+num+" 合计:"+(num*17); //将信息保存至s中
  return new setmeal_1();}
 else if(kind==2) {
  s.s=s.s+"\n"+"套餐2 单价："+"15"+" 数量"+num+" 合计:"+(num*15);
  return new setmeal_2();}
 else if(kind==3) {
  s.s=s.s+"\n"+"套餐3 单价："+"25"+" 数量"+num+" 合计:"+(num*25);
  return new setmeal_3();}
 else return null;
 }
}

订购食物，返回价格

class price{
 public foodfactory create;
 //构造方法将抽象工厂传入
 public price(foodfactory create) {
 this.create=create;
 }
 public double orderhamburger(print s,int kind,int num) {
 hamburger hamburger=create.createhamburger(s,kind, num);
 return hamburger.price(num);
 }
 public double orderdrink(print s,int kind,int num) {
 drink drink=create.createdrink(s,kind, num);
 return drink.price(num);
 }
 public double orderchicken(print s,int kind,int num) {
 chicken chicken=create.createchicken(s,kind, num);
 return chicken.price(num);
 }
 public double ordersweetmeats(print s,int kind,int num) {
 sweetmeats sweetmeats=create.createsweetmeats(s,kind, num);
 return sweetmeats.price(num);
 }
 public double ordersnack(print s,int kind,int num) {
 snack snack=create.createsnack(s,kind, num);
 return snack.price(num);
 }
 public double orderfrenchfries(print s,int kind,int num) {
 frenchfries frenchfries=create.createfrenchfries(s,kind, num);
 return frenchfries.price(num);
 }
 public double ordersetmeal(print s,int kind,int num) {
 setmeal setmeal=create.createsetmeal(s,kind, num);
 return setmeal.price(num);
 }
}

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