using System;

​

public class program 

{

    public static void Main ()

    {

        int x, sum = 0;

        Console.Write("Odd numbers");

        for ( x = 0; x<= 19; x++)

        {

            x = x + 1;

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

            sum =sum + x;

        }

    Console.WriteLine("The sum is {0}", sum);

    }

    }

​