static void Main(string[] args) { bool exit = false; List <Employee> age = new List <Employee>(); do { Console.WriteLine(StandardMessages.Menu()); switch (Console.ReadLine()) { case "1": Console.WriteLine(StandardMessages.AskForName()); Console.ReadLine(); break; case "2": Console.WriteLine(StandardMessages.AskForPhoneNumber()); Console.ReadLine(); break; case "3": Console.WriteLine(StandardMessages.AskForAge()); Console.ReadLine(); break; case "4": Console.WriteLine(StandardMessages.DisplayEmployee()); //Console.WriteLine(); Console.ReadLine(); break; case "5": Console.WriteLine(StandardMessages.DisplayAverageAge()); Console.WriteLine(Employee.Count); break; case "6": exit = true; break; default: break; } } while (exit == false); }