using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("insert your age if you are younger than 15");

        int age = Convert.ToInt32(Console.ReadLine());

        switch (age) 

        {

            case 1 :

                Console.WriteLine(" too young");

                break;

            case 2 :

                Console.WriteLine(" too young");

                break;

            case 3 :

                Console.WriteLine("child");

                break;

            case 4 :

                Console.WriteLine("kid");

                break;

            case 5 :

                Console.WriteLine("student 1");

                break;

            case 6 :

                Console.WriteLine("student 2");

                break;

            case 7 :

                Console.WriteLine("student 3");

                break;

            case 8 :

                Console.WriteLine("student 4");

                break;

            case 9 :

                Console.WriteLine("student 5");

                break;

            case 10 :

                Console.WriteLine("student 6");

                break;

            case 11 :

                Console.WriteLine("middle school 1");

                break;

            case 12 :

                Console.WriteLine("middle scool 2");

                break;

        }

        if ( age == 13 ) {

            Console.WriteLine("you can be good");

        }

        else if ( age == 14) {

            Console.WriteLine("need younger");

        }

        else if ( age == 15) {

            Console.WriteLine("too old");

        }

        Console.WriteLine("insert you age tp see the your age until 78");

        int secendage = Convert.ToInt32(Console.ReadLine());

        while (secendage <= 78) {

            Console.WriteLine(secendage);

            secendage++;

        }

    }

}

​