public static bool CCPayment(string ccNumber) { do { char cardNumber = ccNumber[0]; Console.WriteLine("Please enter expiration date"); bool expNmber = Validation.ValExpirDate(Console.ReadLine()); Console.WriteLine("Please enter CVV (located on back of card)"); bool cvvNumber = Validation.ValidCVV(cardNumber, Console.ReadLine()); } while (false); return(true); }