using System;

​

public class Program

{

    private static int isPrime(int x)

    {

        int i;

        for (i = 2; i < x - 1; i++)

        {

            if (x % i == 0)

            {

                return 0;

            }

        }

​

        return 1;

    }

​

    public static void Main()

    {

        int x = 11;

        for (int i = 2; i <= x; i++)

        {

            int result = isPrime(i);

            if (result == 1)

            {

                Console.WriteLine("{0}", i);

            }

        }

    }

}