用循环语句for购物清算例题

最新推荐文章于 2024-03-07 15:13:31 发布

原创最新推荐文章于 2024-03-07 15:13:31 发布 · 280 阅读

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#java #开发语言 #后端

该博客展示了一个使用Java实现的简单购物结算系统。用户可以选择商品编号，输入购买数量，系统会根据选择的商品和数量计算总价，并提供折扣计算、应付金额及找零功能。通过循环语句实现多次购买操作。

import java.util.Scanner;
public class work6{
public static void main(String[] args){
System.out.println("********************************************");
System.out.println("请选择购买的商品编号:");
System.out.println("1.T恤\t\t2.网球鞋\t3.网球拍");
System.out.println("********************************************");
Scanner sc=new Scanner(System.in);
String flag="x";
int pId = 0;
int pNum = 0;
double tPrice = 245.0;
double wqxPrice = 570.0;
double wqpPrice = 320.0;
double oneTotalPrice = 0;
double TotalPrice = 0;
while ("x".equals(flag)){
System.out.println();
System.out.print("请输入商品编号;");
pId = sc.nextInt();
if (pId !=1 && pId !=2 && pId!=3){
System.out.println("抱歉您输入的商品不存在请重新输入");
continue;
}
System.out.print("请输入购买数量:");
pNum = sc.nextInt();
switch(pId){
case 1:
oneTotalPrice = pNum * tPrice;
System.out.println("T恤￥" + tPrice + "\t数量" + pNum + "\t合计￥" + oneTotalPrice);
TotalPrice =+ oneTotalPrice;
oneTotalPrice = 0;
break;
case 2:
oneTotalPrice = pNum * wqpPrice;
System.out.println("网球拍￥" + tPrice + "\t数量" + pNum + "\t合计￥" + oneTotalPrice);
TotalPrice += oneTotalPrice;
oneTotalPrice = 0;
break;
case 3:
oneTotalPrice = pNum * wqxPrice;
System.out.println("网球鞋￥" + tPrice + "\t数量" + pNum + "\t合计￥" + oneTotalPrice);
TotalPrice += oneTotalPrice;
oneTotalPrice = 0;
break;
}
System.out.println("是否继续(y/n):");
flag = sc.next();
System.out.println();
System.out.print("折扣:");
double zk = sc.nextDouble();
double yf = TotalPrice * zk;
System.out.print("应付金额"+ yf);
System.out.println();
System.out.print("实付金额");
Double sf = sc.nextDouble();
if (yf > sf){
System.out.print("您输入的金额小于应付金额，请重新输入");
sf = sc.nextDouble();
}
System.out.print("找钱"+(sf - yf));
}
}

}