C#_FibonacciNumbers.cs

using System;


    class FibonacciNumbers
    {
        static void Main()
        {
            int n = int.Parse(Console.ReadLine());
            int a = 0;
            int b = 1;
            int c;
            if (n >= 3)
            {
                Console.Write(a + " " + b + " ");
                for (int i = 0; i < n-2; i++)
                {
                    c = a;
                    a = b;
                    b = c + a;
                    Console.Write(b +" ");
                }
                Console.WriteLine();
            }
            else if (n==2)
            {
                Console.WriteLine(a+" "+b);
            }
            else if (n==1)
            {
                Console.WriteLine(a);
            }
        }
    }