Codenstuff.com

using System;
using System.Collections.Generic;

namespace ProjectEaulaProblem2
{
    class Program
    {
        private static uint[] numbers = new uint[]
                                            {
                                                1, 2, 3, 5, 8, 13, 21, 34, 55, 89
                                            };

        private static List<uint> numbs = new List<uint>(numbers);
        static void Main()
        {
            uint c = numbs[numbs.Count - 1] + numbers[numbs.Count - 2];
            int prevIndex = (numbers.Length - 1);
            uint nextnum = numbers[prevIndex] + numbers[prevIndex - 1];
            Console.WriteLine("Next number = {0}", nextnum);
            Console.WriteLine("Real number = {0}", 55 + 89);
            Console.ReadLine();
        }
    }
}