using System;

public class Program

{

    public static void Main()

         {

        Console.WriteLine("These are the odd numbers between 1 and 30");

        int i = 1;

        do

        {

            Console.WriteLine("I is :" + i );

            i = i + 2;

        }while(i<=30);

        Console.WriteLine("Press any key to exit");

        Console.ReadLine();

         }

}

​