App accepts a number less than 5 and output the diff

Question

Hi Team

 

I need your help i want to create a console app that accept 5 number and output the diff for that number. My challenge to this is test scenario for user input, please assist thanks.  Below this what i have attempted to solve this, but it i must also find a way to create scenario for test cases and need some help please .

using System;

public class Program
{
    public static void Main()
    {
            string[] seperators = {",", " ", ";", "."};
            int num2;
            Console.WriteLine("Input numbers over 10:");

            string[] splitArray = Console.ReadLine().Split(seperators, StringSplitOptions.RemoveEmptyEntries);
            foreach (string num in splitArray)
            {

            if(Int32.TryParse(num, out num2) == true)
            {
                if (num2 < 10)
                {
                    Console.WriteLine(num + " is smaller than 10");
                }
            }
            else
            {
                Console.WriteLine(num + " is not a f***ing number...");
            }
            }
        }

    }