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
}
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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
}
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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);
}
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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;
}
}
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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;
}
}
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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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