using System; 

    public class Program 

{   public static void Main()

    {

            double P = Math.PI; Console.WriteLine(" пи = " + "{0:F12}", +P); // Console.WriteLine("");

            Console.WriteLine(" Search > F [MHz]        (Enter>1) {input L & C} = ");

​

                Console.WriteLine(" Search F");

                Console.Write(" Input C [pF] => ");

                int C = int.Parse(Console.ReadLine());

                Console.Write(" Input L [microHenry] => ");

                int L = int.Parse(Console.ReadLine());

                double F = 1 / (2 * P * Math.Sqrt(C * L));

                Console.WriteLine(" Frequency [MHz] = " + "{0:F6}", +F * 1000);

                // System.Threading.Thread.Sleep(60000);

        }

 }

​