Happy pi day!

{

class Program
{

       static double PI(int i, int limit)
       {
               return (i > limit)? 1 : (1 + i / (2.0 * i + 1) * PI(i + 1, limit));
       }

       static void Main(string[] args)
       {
               double pi = 2 * PI(1, 2011);
               Console.WriteLine(pi);
               Console.WriteLine("Happy pi day!");
               Console.ReadLine();
       }
}

}