商品换购功能用switch，if结构

import java.util.Scanner;

public class ZuoYe {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println(“输入消费金额”);
int money =sc.nextInt();
System.out.println(“1满50,加2元换购百事可乐1瓶”);
System.out.println(“2满100,加3元换购500ml可乐1瓶”);
System.out.println(“3满100,加10元换购5公斤面粉”);
System.out.println(“4满200,加10元换购1个苏泊尔炒菜锅”);
System.out.println(“5满200,加20元换购欧莱雅爽肤水”);
System.out.println(“0不换购”);
System.out.println(“请输入数字”);
int xuan =sc.nextInt();
switch (xuan) {
case 1:
if(money>=50){
System.out.println(“本次消费总金额：”+(money+2));
System.out.println(“成功换购：百事可乐一瓶”);
}else{
System.out.println(“消费金额不够”);
}
break;
case 2:
if(money>=100){
System.out.println(“本次消费总金额：”+(money+10));
System.out.println(“成功换购：500ml可乐1瓶”);
}else{
System.out.println(“消费金额不够”);
}
break;
case 3:
if(money>=100){
System.out.println(“本次消费总金额：”+(money+3));
System.out.println(“成功换购：5公斤面粉”);
}else{
System.out.println(“消费金额不够”);
}
break;
case 4:
if(money>=200){
System.out.println(“本次消费总金额：”+(money+10));
System.out.println(“成功换购：1个苏泊尔炒菜锅”);
}else{
System.out.println(“消费金额不够”);
}
break;
case 5:
if(money>=200){
System.out.println(“本次消费总金额：”+(money+20));
System.out.println(“成功换购：欧莱雅爽肤水”);
}else{
System.out.println(“消费金额不够”);
}
break;
case 0:
System.out.println(“不换购”);
break;

	default:
		System.out.println("输入有误");
		break;
	}
	
}

}