Fibonachi zadacha klas s rekurciq

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

namespace ConsoleApp23
{
    class Program
    {
        static void Pechat (int n)
        {
            Console.WriteLine(n);
            if (n > 1) Pechat(n - 1);
        }
        static int Fib(int n)
        {
            if (n == 1) return 1;
            if (n == 2) return 1;
            return Fib(n - 1) + Fib(n - 2);
        }

        static void Main(string[] args)
        {
            Console.WriteLine(Fib(7));
        }
    }
}