题目

幸运抽奖

代码

        static void Main(string[] args)
        {
            try
            {
                string yn;
                string name;
                int password;
                do
                {
                    Console.WriteLine("*****欢迎进入奖课富翁系统*****");
                    Console.WriteLine("\t1.注册");
                    Console.WriteLine("\t2.登录");
                    Console.WriteLine("\t3.抽奖");
                    Console.WriteLine("******************************");
                    Console.Write("请选择菜单：");
                    int daan = Convert.ToInt32(Console.ReadLine());
                    if (daan == 1)
                    {
                        Console.WriteLine("[奖课富翁系统>注册]");
                        Console.WriteLine("请输入个人注册信息：");
                        Console.Write("用户名：");
                        name = Console.ReadLine();
                        Console.Write("密码：");
                        password = Convert.ToInt32(Console.ReadLine());
                        Random random = new Random();  //随机生成会员卡号  
                        int n = random.Next(1000, 9999);
                        Console.WriteLine("注册成功，请记好你的会员卡号");
                        Console.WriteLine("用户名\t密码\t会员卡号");
                        Console.WriteLine("{0}\t{1}\t{2}", name, password, n);
                    }
                    else if (daan == 2)
                    {
                        name = "admin";
                        password = 123456;
                        Console.WriteLine("[奖课富翁系统>登录]");
                        int a = 0;//储存用户名或者密码输错的次数
                        for (int i = 0; i < 3; i++)
                        {
                            Console.Write("请输入用户名：");
                            string name1 = Console.ReadLine();
                            Console.Write("请输入密码：");
                            int password1 = Convert.ToInt32(Console.ReadLine());
                            if (name1 == name && password1 == password)
                            {
                                Console.WriteLine("欢迎您：admin");
                                break;
                            }
                            else
                            {
                                Console.WriteLine("用户名或密码输入错误，请重新输入");
                                a++;
                            }
                            if (a == 3)
                            {
                                Console.WriteLine("你已经输错了三次，不能在输入");
                            }
                        }
                    }
                    else if (daan == 3)
                    {
                        Console.WriteLine("[奖课富翁系统>抽奖]");
                        Console.Write("请输入你的会员卡号：");
                        int vipnum = Convert.ToInt32(Console.ReadLine());
                        int[] xysz = new int[5];//xysz为幸运数字
                        Console.Write("本日的幸运数字为：");
                        for (int i = 0; i < 5; i++)
                        {
                            Random random = new Random();
                            int n = random.Next(1000, 9999);
                            xysz[i] = n;

                            Console.WriteLine(xysz[i] + "\t");
                            if (xysz[i] == vipnum)
                            {
                                Console.WriteLine("恭喜你，你是本日的辛运会员");
                                break;
                            }
                            if (i == 4)
                            {
                                Console.WriteLine("抱歉！你不是本日的幸运会员！");
                            }
                        }


                    }
                    else
                    {
                        Console.WriteLine("你输入的格式有误");
                    }
                    Console.Write("继续吗？（y/n）:");
                    yn = Console.ReadLine();
                    if (yn == "n")
                    {
                        Console.WriteLine("系统退出，谢谢使用");
                    }
                } while (yn != "n");
            }
            catch
            {
                Console.WriteLine("你输入的格式有误");
            }

            Console.ReadKey();

效果图

image.png
image.png