using System;

public class Program

{

    public static void Main()

    {

        bool correct = true;

        do

        {

            try

            {

                Console.WriteLine("Hello give me a number to square");

                int myDouble = Convert.ToInt16(Console.ReadLine());

                Console.WriteLine(myDouble * myDouble);

                correct = true;

            }

            catch(OverflowException e)

            {

                Console.WriteLine("ouch, thats way too big a number");

            }

            catch(FormatException e)

            {

                Console.WriteLine("ouch, thats not a whole number");

            }

            catch{}

        }

        while(correct == false);

    }

}

​