using System;

public class fibo

    {

        public void fibonacci()

        {

            int a = 0, b = 1, c = 0, i, n;

            Console.WriteLine("Enter the number till where you want fibonacci series :");

            n = Convert.ToInt32(Console.ReadLine());

            Console.Write(a+" "+b+" ");

            for(i=2;i<=n;i++)

            {

                c = a + b;

                Console.Write(c+" ");

                a = b;

                b = c;

            }

        }

    }

    public class mainclass

    {

        public static void Main()

        {

            fibo p = new fibo();

            p.fibonacci();

        }

    }