18.升级我行我素购物管理系统，实现按会员积分计算会员折扣

import java.util.Scanner;


public class Main {
public static void main(String[]args){
    Scanner input=new Scanner(System.in);
    System.out.println("请输入会员积分");
    int vip =input.nextInt();

        if (vip>=2000){
        if (vip<4000){
            System.out.print("八折\n");
        }else if(vip>=4000&&vip<8000){
            System.out.print("七折\n");
        }else if(vip>=8000){
            System.out.print("六折\n");
        }
            }else{
            if (vip<2000){
                System.out.println("九折\n");
            }
        }
    System.out.println("您的积分"+vip);
    }
}