public static void Main(string[] args) { Console.WriteLine("A Game of BlackJack"); Console.WriteLine("==================="); bool isInvalid = true; while (isInvalid) { Console.Write("What would you like to do: deal, quit?: "); string response = Console.ReadLine(); switch (response.ToUpper()) { case "DEAL": Game game = new Game(); game.DealInitialCards(); isInvalid = false; break; case "QUIT": Environment.Exit(-1); isInvalid = false; break; default: Console.WriteLine("Wrong Command. Try again"); break; } } }