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标题: java基础练习题:购物结算功能 [打印本页]

作者: java无忧网 时间: 2016-7-15 11:10
标题: java基础练习题:购物结算功能
需求说明：
循环输入商品编号和购买数量
当输入n时结账

结账时计算应付金额并找零

import java.util.Scanner;
public class Test5{

public static void main(String [] args){

      Scanner input=new Scanner(System.in);
      System.out.println("*************************************************");

      String product1="T恤";
      String product2="网球鞋";
      String product3="网球拍";

      double price1=245;
      double price2=570;
      double price3=125;

      String answer="y";
      double sum=0;
      while("y".equals(answer)){
         System.out.println("请选择购买的商品编号:");

         System.out.println("1."+product1+"\t"+"2."+product2+"\t"+"3."+product3);

      System.out.println("*************************************************");

         System.out.print("请输入商品编号:");
         int num=input.nextInt();

         System.out.print("请输入购买的数量:");
         int count=input.nextInt();

      switch(num){
         case 1:
               sum=sum+(count*price1);
               System.out.println(product1+"\t"+price1+"\t"+"数量:"+count+"\t"+"合计:"+(count*price1));
               break;
   case 2:
               sum=sum+(count*price2);
               System.out.println(product2+"\t"+price2+"\t"+"数量:"+count+"\t"+"合计:"+(count*price2));
               break;
   case 3:
               sum=sum+(count*price3);
               System.out.println(product3+"\t"+price3+"\t"+"数量:"+count+"\t"+"合计:"+(count*price3));
               break;

         }

         System.out.print("是否继续(y/n)");
         answer=input.next();

      }

      System.out.print("请输入折扣:");
      double zhekou= input.nextDouble();
      System.out.println("应付金额:"+(sum*zhekou));
      System.out.print("实付金额:");
      double money=input.nextDouble();

      System.out.println("找钱:"+(money-(sum*zhekou)));

      System.out.println("程序结束!");

}

}

运行结果:

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