static void OperationWithCards(string userAnswer, Account acc, string userLogin, string userPass) { switch (userAnswer) { case "1": Console.Write("Card name: "); string inputCardName = Console.ReadLine(); Console.Write("Card pin: "); string inputCardPin = Console.ReadLine(); acc.AddNewCard(inputCardName, inputCardPin); break; case "2": ChangeBalance(acc); break; case "3": acc.GetInfo(userLogin, userPass); break; default: break; } }