[plt-scheme] Please help : How do i add contents from user to a user defined list

From: abduls85 (abduls85 at gmail.com)
Date: Fri Feb 19 09:19:42 EST 2010

Hi Guys,

I am trying to add content into a user-defined list within a loop, but
no matter what i try it is not working. Please help. Any help provided
will be greatly appericiated

(define Grades(list)); TotalAU is a list that stores all the AU
according to module

(display "Please enter the number of module taken in the semester: ")
  (let ((Modules(read)))
(do ((i 0 (+ i 1)))
      ((= i Modules) )
      ; User will enter all his grades
      ; Need to store into the list Grades
      (display "Please enter your grade: ")
      ;Need help to proceed after this

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