public static void Main()
Console.WriteLine("teclea una edad:");
edad = int.Parse(Console.ReadLine());
case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 8: case 9:
Console.WriteLine(" Infante");
case 10: case 11: case 12:
Console.WriteLine("Preadolescente");
case 13: case 14: case 15: case 16: case 17: case 18: case 19: case 20:
Console.WriteLine("Adolescente");
Console.WriteLine("Adulto");