幸运抽奖项目

import java.util.Scanner;


public class demoshangjilianxi第十章 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
    /**
     * 设变量
     */
        Scanner input =new Scanner(System.in);
        String jixu ="y";//是否继续
        String young =" ";//用户名
        String pwd=" ";//密码
        String hu =" ";//用户名定义变量
        String mi =" ";//密码定义变量
        int max =9999;//密码最小值
        int min =1000;//密码最大值
        int cardnumber =(int)(Math.random()*(max-min))+min;
        int cardnumber1 =(int)(Math.random()*(max-min))+min;
        int cardnumber2 =(int)(Math.random()*(max-min))+min;
        int cardnumber3 =(int)(Math.random()*(max-min))+min;
        int cardnumber4=(int)(Math.random()*(max-min))+min;
        int cardnumber5 =(int)(Math.random()*(max-min))+min;
        do{
            
        
        System.out.println("\n\t\t*****欢迎进入奖客富翁活动*****" );
        System.out.println("\t\t\t1:注册");
        System.out.println("\t\t\t2:登录");
        System.out.println("\t\t\t3:抽奖");
        System.out.println("**************************************");
        System.out.println("请选择菜单");
        int num =input.nextInt();
        switch(num){
        case 1:
            System.out.println("奖客富翁系统>注册");
            System.out.println("请填入个人信息");
            System.out.println("用户名");
            young =input.next();
            System.out.println("密码");
            pwd=input.next();
            System.out.println("");
            System.out.println("注册成功.请收好你的会员卡");
            System.out.println("用户名"+"\t"+"密码"+"\t"+"会员卡号");
            System.out.println(young +"\t"+pwd+"\t"+cardnumber);
            System.out.println("继续吗(y/n)");
            jixu =input.next();
            break;
        case 2:
            System.out.println("奖客富翁系统>登录");
            System.out.println("请填入个人信息");
            for(int i =1;i<=3;i++){
                System.out.println("用户名");
                hu =input.next();
                System.out.println("密码");
                mi =input.next();
                if(hu.equals(young)&&mi.equals(pwd)){
                    System.out.println("欢迎"+young);
                    break;
                }
                System.out.println("还有"+(3-i)+"次机会");
                if(3-i!=0){
                    continue;
                    
                }
                    
             }
            System.out.println("继续吗()y/n");
            jixu=input.next();
            break;
        case 3:
            System.out.println("奖客富翁系统>抽奖");
            System.out.println("请输入你的会员卡号");
            int kahao =input.nextInt();
            if(kahao==cardnumber){
                System.out.println("本日幸运数字");
                System.out.println(cardnumber+" "+cardnumber1+" "+cardnumber2+" "+
                cardnumber3+" "+cardnumber5);
                if(kahao==cardnumber4||kahao==cardnumber3||kahao==cardnumber5){
                    System.out.println("今日幸运客户");
                }else{
                    System.out.println("你不是幸运客户");
                }
            }else{
                System.out.println("卡号错误");
            }
            System.out.println("继续吗(y/n)");
            jixu =input.next();
            break;
            default:
                System.out.println("错误");
                
                }
        }while(jixu.equals("y"));
        System.out.println("系统退出,谢谢使用");
        }
        
            
                
            
        
    }