//Write a program that reads a number n and prints on the console the first n members of the Fibonacci sequence (at a single line, separated by spaces) : 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, …. Note that you may need to learn how to use loops.

using System;

class FibonachiNums
{
    static void Main()
    {
        Console.Write("Fibonachi numbers to display: ");
        string nums = Console.ReadLine();
        int totalNums = int.Parse(nums);

        ulong result = 0;
        ulong a = 0;
        ulong b = 1;

        Console.Write("Fibonachi sequence - ");

        for (int i = 0; i < totalNums; i++)
        {
            Console.Write(" {0}", result);

            a = result + b;
            result = b;
            b = a;
        }
        Console.WriteLine();
    }
}