using System;

    class ReverseDigit
    {
        static void Main(string[] args)
        {
            Console.Write("Enter a number: ");
            decimal number = decimal.Parse(Console.ReadLine());

            Reverse(number);

        }

        private static void Reverse(decimal number)
        {
            string stringNumber = number.ToString();
            string[] reversedNumber = new string[stringNumber.Length];

            if (number > 0)
            {
                for (int i = stringNumber.Length - 1; i >= 0; i--)
                {
                    reversedNumber[stringNumber.Length - i - 1] = stringNumber[i].ToString();
                }
            }
            else
            {
                reversedNumber[0] = stringNumber[0].ToString();
                for (int i = stringNumber.Length - 1; i >= 1; i--)
                {
                    reversedNumber[stringNumber.Length - i] = stringNumber[i].ToString();
                }
            }

            foreach (string digit in reversedNumber)
            {
                Console.Write(digit);
            }
            Console.WriteLine();
        }
    }