public void Start() { Service.AddValues(20); Menu(); while (true) { Console.Write("Comanda: "); string comanda = Console.ReadLine(); switch (comanda) { case "1": ShowAllStudents(); break; case "2": ShowAllTeme(); break; case "3": ShowAllNote(); break; case "4": AddTema(); break; case "5": ModifyDeadline(); break; case "6": AddNota(); break; case "0": return; default: Console.WriteLine("Comanda invalida."); break; } } }