using System;

​

public class Program

{

    public static void Main()

    {

        int n1 = 0;

        int n2 = 1;

        int result = 0;

        Console.WriteLine(n1);

        Console.WriteLine(n2);

        while (result <= 10)/*Number of times you want to do the sequence.*/

        {

            result = n1 + n2;

            n1 = n2;

            n2 = result;

            Console.WriteLine(result);

        }

​

        Console.WriteLine("Fibonacci");

        Console.WriteLine("________________________");

​

        int f1=5; /*should be set by the user.*/

        int f2=0;

        int ans=0;

        f2 = f1;

        f2--;

        ans = f1 * f2;

        while (f2!=1)

        {

            f2--;

            ans = ans * f2;

        }

        Console.WriteLine(ans);

        Console.WriteLine("Factoriel");

        Console.WriteLine("________________________");

        int a1 = 4;

        int a2 = 2;

        int a3 = 6;

        int a4 = 3;

        int a5 = 7;

        float anssum = a1 + a2 + a3 + a4 + a5;

        float ansa = anssum / 5;

        Console.WriteLine(ansa);

        Console.WriteLine("Average");

​

    }

}