题目

奖客富翁系统

代码

try
                {
                    string shifou;
                    string name;
                    int password;
                    do
                    {
                        Console.WriteLine("*****欢迎进入奖课富翁系统*****");
                        Console.WriteLine(@"
             1.注册
             2.登录
             3.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，你是本日的幸运会员");
                                    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）:");
                        shifou = Console.ReadLine();
                        if (shifou == "n")
                        {
                            Console.WriteLine("系统退出，谢谢使用");
                        }
                    } while (shifou != "n");
                }
                catch
                {
                    Console.WriteLine("你输入的格式有误");
                }

                Console.ReadKey();

效果图