public static void Menu()
{
Start:
Console.Clear();
Console.WriteLine("1. See all averages\n\n2. Delete all averages\n\n3. Delete all averages by ID\n");
switch (Console.ReadLine())
{
case "-1":
break;
case "1":
Average.Show();
goto Start;
case "2":
DeleteAll();
goto Start;
case "3":
DeleteByID();
goto Start;
default:
Console.WriteLine("Write a valid value !");
Console.ReadLine();
goto Start;
}
}
