using System;

​

public class Program

{

    public static void Main()

    {

        int num;

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

        num = Convert.ToInt32(Console.ReadLine());

        if (num == 0)

        {

            Console.WriteLine(num + " is zero.");

        }

        else if (num > 0)

        {

            Console.WriteLine(num + " is a positive number.");

        }

        else

        {

            Console.WriteLine(num + " is a negative number.");

        }

    }

}