algo2 09.27 (fakt, fibonacci)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace algoHazi_09_17
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(fakt(10));
            Console.WriteLine(fibonacci(10));
            Console.ReadLine();
        }

        static int fakt(int k)
        {
            if (k == 0) return 1;
            else
            {
                int f = 1;
                for (int i = 1; i <= k; i++)
                {
                    f *= i;
                }
                return f;
            }
        }

        static int fibonacci(int n)
        {
            if (n <= 1) return n;
            else
            {
                int a = n - 1;
                int b = n - 2;
                int c = a + b;

                for (int i = 3; i <= n; i++)
                {
                    Console.WriteLine(c);
                    a = n - i;
                    b = n - 1 - i;
                    c += a + b;
                }
                return c;
            }
        }
    }
}