Console.WriteLine("请输入余额");
            double money = double.Parse(Console.ReadLine());

            try
            {
                for (int i = 0; i < 1; i++)
                {
                    Console.WriteLine("请选择功能：1.存款   2.取款");
                    int a = int.Parse(Console.ReadLine());
                    if (a == 1)
                    {
                        Console.WriteLine("请输入存款金额");
                        double b = double.Parse(Console.ReadLine());
                        money = money + b;
                        Console.WriteLine("存款成功，账户余额为{0}", money);
                        break;
                    }
                    else if (a == 2)
                    {
                        Console.WriteLine("请输入取款金额");
                        double c = double.Parse(Console.ReadLine());
                        if (c > money)
                        {
                            throw new ArgumentOutOfRangeException();
                        }
                        else
                        {
                            money = money - c;
                            Console.WriteLine("取款成功，账户余额为{0}", money);
                            break;
                        }
                    }
                    else
                    {
                        Console.WriteLine("请重新输入");
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("取款金额大于余额，请重新输入");
            }
            finally
            {
                //Console.WriteLine("请输入取款金额");
                double b = double.Parse(Console.ReadLine());
                money = money - b;
                Console.WriteLine("取款成功，账户余额为{0}", money);
            }
            Console.ReadKey();