using System;

public class Program

{

    public static void Main()

    {

         int i,f1 = 1, f2 = 1, f3 = 0, sum=0, avg;

            Console.Write("Enter the Limit : ");

            i = int.Parse(Console.ReadLine());

            Console.WriteLine(f1);

            Console.WriteLine(f2);

            for (i = 1; i <= 18; i++)

            {

                f3 = f1 + f2;

                Console.WriteLine(f3);

                f1 = f2;

                f2 = f3;

            }

      Console.Write("enter the numbers");

        for(i = 1; i<=10; i++)

        {

            sum = sum + i;

            avg = sum/5;

        }

         Console.Write("\nThe Sum is :", +sum);

          Console.ReadLine();

​

    }

}