public void AutoTakeMoney()
        {
            int[,] sql = new int[3, 3] {{123,456,5000},{789,132,1800},{159,753,3000}};
            Console.WriteLine("欢迎使用建设银行提款机");
            start_1:
            Console.WriteLine("请输入您的账号");
            int username = int.Parse(Console.ReadLine());
            //验证账号
            for (int i = 0; i < sql.GetLength(0); i++)
            {
                if (username == sql[i,0])
                {
                    Console.WriteLine("账号正确");
                    goto start2;
                    //break;
                }
                else
                {
                    if (i == sql.GetLength(0) - 1)
                    {
                        Console.WriteLine("账号错误");
                        goto start_1;
                    }
                }
            }
            //验证密码
            start2:
            Console.WriteLine("请输入您的密码");
            int password = int.Parse(Console.ReadLine());
            int count = 0;
            for (int i = 0; i < sql.GetLength(0); i++)
            {
                for (int k = 0; k < sql.GetLength(1); k++)
                {
                    if (password == sql[i, k] && username == sql[i, 0])
                    {
                        Console.WriteLine("密码正确");
                        goto start3;
                        //return;
                    }
                    else
                    {
                        if (k == sql.GetLength(1)-1&&i==sql.GetLength(0)-1)
                        {
                            Console.WriteLine("密码错误");
                            count++;
                            if (count > 3)
                            {
                                Console.WriteLine("密码输入错误超过3次，请取卡");
                            }
                            //return;
                            goto start2;
                            
                        }
                      
                    }

                }
            }
        start3:
            Console.WriteLine("请选择你要进行的操作:1.查询余额\t2.存款\t3.取款\t4.取卡");
            int operate = int.Parse(Console.ReadLine());
            switch (operate)
            {
                case 1: if (username == 123)
                    {
                        Console.WriteLine("还有{0}个大洋", sql[0, 2]);
                        Console.WriteLine("还要继续吗?Y or N");
                        string choose = Console.ReadLine().ToUpper();
                        if (choose == "Y")
                        {
                            Console.Clear();
                            goto start3;
                        }
                        else
                        {
                            Console.WriteLine("不继续就取回卡片");
                            return;
                        }
                       
                    }
                    if (username == 789)
                    {
                        Console.WriteLine("还有{0}个大洋", sql[1, 2]);
                        Console.WriteLine("还要继续吗?Y or N");
                        string choose = Console.ReadLine().ToUpper();
                        if (choose == "Y")
                        {
                            Console.Clear();
                            goto start3;
                        }
                        else
                        {
                            Console.WriteLine("不继续就取回卡片");