Fibonacci

using System;
using System.Linq;
using System.Numerics;

namespace ProgramCS
{
    class Program
    {
        static void Main()
        {
            BigInteger firstNumber = 0;
            BigInteger secondNumber = 1;
            Console.WriteLine("{0}\n{1}", firstNumber, secondNumber);
            for (int i = 1; i <100 ; i++)
            {
                BigInteger nextNumber = firstNumber + secondNumber;
                firstNumber = secondNumber;
                secondNumber = nextNumber;
                Console.WriteLine(nextNumber);
            }
        }
    }
}