Horner java in pgm

Horner.java

public class Horner

{

             public static double eval(double x, double[] p)

              {

        double result = 0;

        for (int i = p.length - 1; i >= 0; i--)

            result = p[i] + (x * result);

        return result;

    }

    public static void main(String[] args)

   {

        int N  = Integer.parseInt(args[0]);

         double[] p = new double[N];

        p[0] = 1;

        for (int i = 1; i < N; i++)

       {

            p[i] = p[i-1] / i;

        }

        while (!StdIn.isEmpty())

        {

            double x = StdIn.readDouble();

            StdOut.println(eval(x, p));

            StdOut.println(Math.exp(x));

            StdOut.println();

        }

    }

}