public static void ShowUserOptions(TodoListManager manager) { while (true) { Console.WriteLine("please choose action"); Console.WriteLine("1 - add a task"); Console.WriteLine("2 - show added tasks"); Console.WriteLine("3 - delete a task"); Console.WriteLine("4 - save to file"); Console.WriteLine("q - quit"); string input = Console.ReadLine(); switch (input) { case "1": Console.WriteLine("please enter task"); string inputTask = Console.ReadLine(); manager.AddNewTask(inputTask); break; case "2": manager.ShowTodos(); break; case "3": manager.DeleteTodo(); break; case "q": Console.WriteLine("you chose to exit"); return; break; case "4": manager.SaveToFile(); break; } } }