Help for a newbie please

Hi

I am new to programming and to VB.net. and am working through the book ASP.NET in 24 hrs. There is a very simple exercise to create a factorial function called from the Page_Load event. I have got as far as the following code which works, but the book suggests that it is the function that should contain a loop.

Could anyone suggest an alternative way of setting up the function.

Thanks

Sub Page_Load (sender as Object, e as EventArgs)
Dim I as Integer
For I = 1 to 5
Response.Write (Fac (I) & "<br>")
Next I
End Sub

Function Fac (number as Integer) as Integer
If number <= 1 Then
Return 1
Else
Return number * Fac (number - 1)
End If
End Function

The one you have at the moment is recursive (it calls itself, decreasing the parameter each time until the termination condition is met).

The book wants you to alter the Fac fuction so that it doesn't call itself anymore but does all the calculations in one go.

Add new loop to Fac() that calculates the factorial for the number that is passed to Fac().

I'm surprised taht the book has taught recursion BEFORE iteration, thats a bit strange.

Thanks for your help. Cheers.