using System;

public class PositiveOrNegativeNumber

{

    public static void Main(string[] args)

    {

        string inputNumber;

        int number;

        Console.WriteLine("Odd or Even ");

        Console.Write("Enter a number: ");

        inputNumber = Console.ReadLine();

        if (Int32.TryParse(inputNumber, out number) == true)

        {

            if (number < 0)

            {

                Console.WriteLine("Input errorm negative input is not allowed.");

            }

            else if (number % 2 == 0)

            {

                Console.WriteLine("The input number is an even number");

            }

            else

            {

                Console.WriteLine("Input number is an odd number");

            }

        }

        else

        {

            Console.WriteLine("Invalid input, please input a numeric value.");

        }

    }

}