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import java.util.Scanner; public class luckyDraw { public static void main(String[] args) { String option; String username = ""; int password = 0; int cardNumber = 0; int max = 9999; int mix = 1000; do { System.out.println("********欢迎进入奖客富翁系统********"); System.out.println("\t1.注册"); System.out.println("\t2.登录"); System.out.println("\t3.抽奖"); System.out.println("*******************************"); Scanner in = new Scanner(System.in); System.out.print("请选择菜单:"); int num = in.nextInt(); switch(num) { case 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("用户名:"); username = in.next(); System.out.print("密码:"); password = in.nextInt(); cardNumber = (int)(Math.random()*(max-mix))+mix; System.out.println(); System.out.println("注册成功,请记好您的会员卡号"); System.out.println("用户名\t密码\t会员卡号"); System.out.println(username+"\t"+password+"\t"+cardNumber); break; case 2: for (int i = 1; i < 4; i++) { System.out.println("[奖客富翁系统 > 登录]"); System.out.print("请输入用户名:"); String username1 = in.next(); System.out.print("请输入密码:"); int password1 = in.nextInt(); if ((username1.equals(username))&(password1==password)) { System.out.println("欢迎您:"+username); break; } else { System.out.println("用户名或密码错误!请重新输入(最多3次机会,当前第"+i+"次)!"); } } break; case 3: System.out.println("[奖客富翁系统 > 抽奖]"); for(int i = 1;i < 4;i++) { System.out.print("请输入您的卡号:"); int cardNumber1 = in.nextInt(); if(cardNumber1==cardNumber) { int luckynumber1 = (int)(Math.random()*(max-mix))+mix; int luckynumber2 = (int)(Math.random()*(max-mix))+mix; int luckynumber3 = (int)(Math.random()*(max-mix))+mix; int luckynumber4 = (int)(Math.random()*(max-mix))+mix; int luckynumber5 = (int)(Math.random()*(max-mix))+mix; System.out.println(); System.out.println("本日的幸运数字为:"+luckynumber1+" "+luckynumber2+" "+luckynumber3+" "+luckynumber4+" "+luckynumber5); if ((cardNumber1==luckynumber1)||(cardNumber1==luckynumber2)||(cardNumber1==luckynumber3)||(cardNumber1==luckynumber4)||(cardNumber1==luckynumber5)) { System.out.println("恭喜!您是本日的幸运会员!"); } else { System.out.println("抱歉!您不是本日的幸运会员!"); } break; }else { System.out.println("会员卡号不正确,您还有"+(3-i)+"次机会!"); } } break; default: System.out.println("您的输入有误!"); } System.out.print("继续吗?(y/n):"); option = in.next(); System.out.println(); } while ("y".equals(option)); System.out.println("系统退出,谢谢使用!"); } }