Fibonachi. Example of using indexer

Programme consists of Fibonacci class library: here is determines Fib1 function, which count imported number"s fibonacci. There is determine an indexer for Fibonacci function in clas.

namespace Testfibonaci
{
    class Program
    {
        static void Main(string[] args)
        {
            fib f = new fib();
            Console.WriteLine("f4=" + f[4]);
            Console.WriteLine("f5=" + f[5]);

        }
    }
}

The result in Console window shown in bellow.

f4=3 f5=5