抽奖系统小程序......(新手，大神勿喷。）

[java]代码库

import java.util.*;
public class Agust {
					public static void main(String[] args) {
						Scanner input=new Scanner (System.in);
						System.out.println("请输入后四位卡号：");
						int nub1=input.nextInt();
						System.out.println("会员卡号后四位是"+nub1);
						int geWei=nub1%10;
						int shiWei=nub1/10%10;
						int baiWei=nub1/100%10;
						int qianWei=nub1/1000;
						System.out.println("会员卡各位"+geWei);
						System.out.println("会员卡十位"+shiWei);
						System.out.println("会员卡百位"+baiWei);
						System.out.println("会员卡千位"+qianWei);
						int sum=(geWei+shiWei+baiWei+qianWei);
						System.out.println("会员卡位数和："+sum);
						if(sum<20)
						System.out.println("恭喜您，您亲妈爆炸。");
						else if(sum>=20)
						System.out.println("恭喜您，您亲妈上天");
						
						
						
						
						
						
					}

}