using System;



namespace Ex6_2

{

    class MainApp

    {

        public static void Main(string[] args)

        {

            double mean = 0;

            mean = Mean(1, 2, 3, 4, 5, mean);



            Console.WriteLine("Æò±Õ:{0}", mean);

        }

        public static double Mean(double a, double b, double c,

                                double d, double e, double mean)

        {

            return (a + b + c + d + e) / 5;

        }

    }

}