using System;

public class Program

{

    public static String TestNumber(int number)

    {

        switch(number)

        {

            case int n when n < 0:

                return "Number is below zero";

            case int n when n == 0:

                return "Number is zero";

            case int n when n > 0:

                return "Number is above zero";

        }

        return "";

    }

    public static void Main()

    {

        Console.WriteLine(TestNumber(-100));

        Console.WriteLine(TestNumber(0));

        Console.WriteLine(TestNumber(100));

    }

}