gistfile1.txt

class Program
{
    static void Main()
    {
        MathHelperExe();
    }

    public static class MathHelper
    {
        public static int Add(int a, int b)
        {
            return a + b;
        }
    }

       static void MathHelperExe()
    {
        int result = MathHelper.Add(2, 3);
        Console.WriteLine(result);
    }
}