10章作业(全)

import java.util.Scanner;

public class Bh {
 public static void main(String[] args) {
  Scanner input = new Scanner(System.in);
  int max = 9999;
  int min = 1000;
  String name = "Tom";
  int password = 111111;
  String as = "y";
  int card = (int) (Math.random() * (max - min)) + min;
  do {

   System.out.println("******欢迎进入奖客富翁系统*****");
   System.out.println("      1.注册 ");
   System.out.println("      2.登录 ");
   System.out.println("      3.抽奖 ");
   System.out.println("*****************************");
   System.out.println("请选择菜单：");
   int xz = input.nextInt();
   if (xz == 1) {
    System.out.println("[奖客富翁系统>注册]");
    System.out.println("请填写个人注册信息：");
    System.out.print("请输入用户名：");
    name = input.next();
    System.out.print("请输入密码：");
    password = input.nextInt();
    System.out.println(" \t");
    System.out.println("注册成功，请记住您的会员卡卡号");
    System.out.println("用户名         密码               会员卡号 ");
    System.out
      .println(name + "    \t" + password + "\t    " + card);
    System.out.print("还要继续吗？(y/n)");
    as = input.next();
   } else if (xz == 2) {
    System.out.println("[奖客富翁系统>登录]");

    System.out.println("\t ");
    for (int i = 1; i <= 3; i++) {

     System.out.print("请输入用户名：");
     String name1 = input.next();
     System.out.print("请输入密码：");
     int password2 = input.nextInt();
     if (name.equals(name1) && password == password2) {
      System.out.println("欢迎您：" + name1);
      break;
     } else {
      System.out.println("请重新输入:");
     }
    }

    System.out.print("还要继续吗？(y/n)");
    as = input.next();
   } else if (xz == 3) {
    System.out.println("[奖客富翁系统>抽奖]");
    System.out.print("请输入您的卡号：");
    int kh = input.nextInt();
    System.out.println("\t");
    System.out.print("本日的幸运数字为：");
    for (int i = 0; i < 3; i++) {
     card = (int) (Math.random() * (max - min)) + min;
     System.out.print(card + "\t");
    }
    if (kh == card) {
     System.out.print("恭喜，您是今日的幸运会员！");
    } else {
     System.out.print("抱歉，您不是今日的幸运会员！");
    }
    System.out.print("还要继续吗？(y/n)");
    as = input.next();

   }

  } while ("y".equals(as));
  System.out.print("系统退出，谢谢使用！");
 }
}