同学们应该都去麦当劳或肯德基吃过快餐吧？请同学们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++/python/java,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.使用优惠劵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）。
类图：
建立ifood接口实现各类食物信息的打印：
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public interface ifood {
/**
* 打印输出食物信息
* @return
*/
string printmesage();
}
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抽象类abstractbasefood
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public class abstractbasefood {
// 类别
protected string kind;
// 数量
protected int num;
// 价格
protected float price;
//找零
// 合计
public float totalprice()
{
return this.num * this.price;
}
}
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各类果汁的基类baverage：
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public abstract class beverage extends abstractbasefood implements ifood
{
public string printmesage()
{
return ("--" + this.kind + "饮料，\t单价：" + this.price + "，\t数量：" + this.num + "，\t合计：" + this.totalprice());
}
}
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建立baverage的具体实现类chinabaverage：
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public class chinabeverage extends beverage
{
public chinabeverage(int num)
{
this.kind = "可乐";
this.price = 6.0f;
this.num = num;
}
}
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以此类推分别建立 chickenwing，frenchfries，hamburg抽象类和它们的实现类chinachickenwing,frenchfries,hamburg
建立抽象工厂ikfcfactory：
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public interface ikfcfactory
{
// 生产汉堡
public chinahamburg createhamburg(int num);
// 生产薯条
public xtx.frenchfries createfrenchfries(int num);
// 生产鸡翅
public chinachickenwings createchickenwings(int num);
// 生产饮料
public chinabeverage createbeverage(int num);
}
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建立ikfcfactory的实现类chinafactory：
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public class chinakfcfactory implements ikfcfactory
{
// 生产可乐
public chinabeverage createbeverage(int num)
{
return new chinabeverage(num);
}
// 生产奥尔良烤鸡翅
public chinachickenwings createchickenwings(int num)
{
return new chinachickenwings(num);
}
// 生产薯条
public chinafrenchfries createfrenchfries(int num)
{
return new chinafrenchfries(num);
}
// 生产麻辣风味鸡腿汉堡
public chinahamburg createhamburg(int num)
{
return new chinahamburg(num);
}
}
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建立customer类实现食物的选择和文件存储：
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package xtx.factory.custom;
import java.io.bufferedwriter;
import java.io.filewriter;
import java.io.ioexception;
import xtx.chinabeverage;
import xtx.chinachickenwings;
import xtx.chinafrenchfries;
import xtx.ikfcfactory;
import xtx.chinahamburg;
public class customer
{
// 抽象工厂
private ikfcfactory kfcfactory;
// 构造方法将抽象工厂作为参数传入
public customer(ikfcfactory kfcfactory2)
{
this.kfcfactory = kfcfactory2;
}
/**
* 订购食物
* @throws ioexception
*/
private string s[] =new string[5];
public void showbill() throws ioexception{
bufferedwriter bw=new bufferedwriter(new filewriter("d://workspace2eclipse//xtx//src//xtx//factory//custom//show.txt",true));
bw.write("---------------------账单如下---------------------");
bw.newline();
for(int i=0;i<5;i++){
bw.write(s[i]);
bw.newline();
bw.flush();
}
}
// 订购麻辣鸡腿汉堡
public float orderhamburg(int num) throws ioexception
{
// 获得麻辣鸡腿汉堡
chinahamburg hamburg = kfcfactory.createhamburg(num);
// 输出订购信息
system.out.print(hamburg.printmesage());
s[0]=hamburg.printmesage();
system.out.print("\n");
// 返回总价
return hamburg.totalprice();
}
// 订购奥尔良烤鸡翅
public float orderchickenwings(int num)
{
// 获得奥尔良烤鸡翅
chinachickenwings chickenwings = kfcfactory.createchickenwings(num);
// 输出订购信息
system.out.print(chickenwings.printmesage());
s[1]=chickenwings.printmesage();
system.out.print("\n");
// 返回总价
return chickenwings.totalprice();
}
// 订购薯条
public float orderfrenchfries(int num)
{
// 获得薯条
chinafrenchfries frenchfries = (chinafrenchfries) ((ikfcfactory) kfcfactory).createfrenchfries(num);
// 输出订购信息
system.out.print(frenchfries.printmesage());
s[2]=frenchfries.printmesage();
system.out.print("\n");
// 返回总价
return frenchfries.totalprice();
}
// 订购可乐
public float orderbeverage(int num)
{
// 获得可乐
chinabeverage beverage = kfcfactory.createbeverage(num);
// 输出订购信息
system.out.print(beverage.printmesage());
s[3]=beverage.printmesage();
system.out.print("\n");
return beverage.totalprice();
}
//订购套餐一
public float ordercombo1(int num)
{
// 获得可乐
chinabeverage beverage = kfcfactory.createbeverage(num);
// 获得麻辣鸡腿汉堡
chinahamburg hamburg = kfcfactory.createhamburg(num);
s[4]=("--套餐一,\t单价：21,\t数量："+num+"\t\t合计："+(beverage.totalprice()+hamburg.totalprice())+"\n");
system.out.print("--套餐一,\t单价：21,\t数量："+num+"\t\t合计："+(beverage.totalprice()+hamburg.totalprice())+"\n");
return beverage.totalprice()+hamburg.totalprice();
}
}
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mainapp：
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package xtx.factory.itf;
import java.io.bufferedwriter;
import java.io.filewriter;
import java.io.ioexception;
import java.util.scanner;
import xtx.ikfcfactory;
import xtx.factory.custom.customer;
public class mainapp
{
/**
* 主应用程序方法
*
* @param args
* @throws ioexception
*/
public static void main(string[] args) throws ioexception
{
/**
* 定义一个肯德基（ikfcfactory类型）
*/
ikfcfactory kfcfactory = (ikfcfactory) new chinakfcfactory();
customer customer = new customer(kfcfactory);
/**
* 开始点餐
*/
// 一个麻辣鸡腿汉堡
scanner in =new scanner(system.in);
//system.out.print("请输入付款金额");
system.out.print("-----现有如下产品-----\n");
system.out.print("--麻辣风味汉堡\t单价：15.0.\n--奥尔良风味鸡翅\t单价：3.0\n--普通风味薯条\t单价：8.0\n--可乐饮料\t单价：6.0\n--套餐一（麻辣风味汉堡+可乐饮料）\t单价：21\n");
system.out.print("\n-----------------------");
system.out.print("\n请点餐：\n");
system.out.print("请输入麻辣风味汉堡数量---：");
int a1=in.nextint();
system.out.print("请输入奥尔良风味鸡翅数量-：");
int a2=in.nextint();
system.out.print("普通入风味薯条数量------：");
int a3=in.nextint();
system.out.print("请输入可乐饮料数量------：");
int a4=in.nextint();
system.out.print("请输入套餐份数---------：");
int a5=in.nextint();
system.out.print("\n------账单如下-----\n");
float hamhurgmoney = customer.orderhamburg(a1);
// 四个奥尔良烤鸡翅
float chickenwingsmoney = customer.orderchickenwings(a2);
// 一包薯条
float frenchfriesmoney = customer.orderfrenchfries(a3);
// 两杯可乐
float beveragemoney = customer.orderbeverage(a4);
float combo1=customer.ordercombo1(a5);
//
float sum=hamhurgmoney + chickenwingsmoney + frenchfriesmoney + beveragemoney+combo1;
customer.showbill();
system.out.println("总计：" + (sum));
system.out.print("请输入付款金额:");
int a=in.nextint();
system.out.print("找零："+(a-sum));
customer.showbill();
bufferedwriter bw=new bufferedwriter(new filewriter("d://workspace2eclipse//xtx//src//xtx//factory//custom//show.txt",true));
bw.write("总计: "+sum);
bw.newline();
bw.write("付款："+a);
bw.newline();
float y=a-sum;
bw.write("找零："+y);
bw.newline();
bw.flush();
bw.close();
}
}
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运行结果展示：
文件存储：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/Mr__Cat_/article/details/83448749