Ошибка в консольном приложении - C#

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            int N = 0;
            double[] C;
            double Cpr = 0;
            double Cpp = 0;
            Console.Write("Ввести N");
            String S = Console.ReadLine();
            N = Convert.ToInt32(S);
            C = new double[N];
            Console.Write("\n"); 
            for (int i=0; i<N; i++)
         
    {
        Console.Write("Ввести C[{0}]", i);
        S = Console.ReadLine();
        C[i] = Convert.ToDouble(S);
        Cpp+=C[i];
        Cpr+=1/C[i];
    }
            Console.WriteLine("Cpp={0}", Cpp);
            Double cxx = 1 / Cpr;
            Console.WriteLine("Cpr={0}", cxx);
            Console.ReadKey(True);
        }
    }
}