超市换购

public class Test_19 {

public static void main(String[] args) {

Scanner input = new Scanner(System.in);
System.out.println("请输入消费金额：");
double money = input.nextDouble();
String name1 = "百事可乐饮料一瓶";
String name2 = "500ml可乐一瓶";
String name3 = "5公斤面粉";
String name4 = "1个苏泊尔炒锅";
String name5 = "欧莱雅爽肤水一瓶";
System.out.println("是否参加优惠换购活动：");
System.out.println("1：满50元，加2元换购"+name1);
System.out.println("2：满100元，加3元换购"+name2);
System.out.println("3：满100元，加10元换购"+name3);
System.out.println("4：满200元，加10元换购"+name4);
System.out.println("5：满200元，加20元换购"+name5);
System.out.println("0：不换购");
System.out.println("请选择：");
int num = input.nextInt();
switch (num) {
case 1:
money=money+2;
System.out.println("本次消费总金额："+money);
System.out.println("成功换购："+name1);

break;
case 2:
money=money+3;
System.out.println("本次消费总金额："+money);
System.out.println("成功换购："+name2);

break;
case 3:
money=money+10;
System.out.println("本次消费总金额："+money);
System.out.println("成功换购："+name3);

break;
case 4:
money=money+10;
System.out.println("本次消费总金额："+money);
System.out.println("成功换购："+name4);

break;
case 5:
money=money+20;
System.out.println("本次消费总金额："+money);
System.out.println("成功换购："+name5);

default:
break;
}
 
}

}