private static void Main(string[] args) { Console.WriteLine("================================================================================================="); Console.WriteLine(" WELCOME"); Console.WriteLine("================================================================================================="); Console.WriteLine(); bool running = true; while (running) { Console.WriteLine(" ENTER 1 : TO INITIALIZE A QUEUE"); Console.WriteLine(" ENTER 2 : TO INITIALIZE A STACK"); Console.WriteLine(" ENTER 3 : TO INITIALIZE A LINKED-LIST"); Console.WriteLine(" ENTER 4 : TO EXIT"); Console.WriteLine(); string input = Console.ReadLine(); switch (input) { case "1": QueueOperations.Start(); break; case "2": StackOperations.Start(); break; case "3": LinkedListOperations.Start(); break; case "4": Console.WriteLine("Good bye!"); running = false; break; } } }