static void Main(string[] args) { do { string a; string b; int result; Hamming.Hamming haming = new Hamming.Hamming(); Console.WriteLine("Please write a string"); a = Console.ReadLine(); Console.WriteLine("Please write another string"); b = Console.ReadLine(); try { result = haming.HamingSpace(a, b); Console.WriteLine("Hamming Distance is:{0}", result.ToString()); } catch (Exception ex) { Console.WriteLine("Oops:{0}", ex.Message); } Console.WriteLine(); Console.WriteLine("If you do not continue please write 'exit' "); } while ("exit" != Console.ReadLine()); }