[plt-scheme] Newbie Schemer question

Daniel CAUNE wrote:

>I would like to execute a function that has one of its variable defined
>outside this function, in an upper context. Suppose that I define a simple
>function such as:
>
>(define (f n)
>  (+ *p* n))
>
>I would like to write something like that (the following syntax is
>incorrect):
>
>((let ((*p* 1))
>  (lambda ()
>    (f 2)))
>
>How should I formulate this in Scheme?
>
>  
>

Do you know

  set!

?

The only reason I'm asking this question, is that you wrote newbie in 
the subject line.

-- 
Jens Axel Søgaard