Edited by author 02-19-2004 02:54 PM
Yongbo Jing:

Implementing it is fine (in fact it is easier for us to grade if you include an output file). I was trying to steer you to the section in the chapter regarding the design process. It includes implementation, but he only describes implementation details informally.

The difference between classes and modules is the point of the question. You should read the chapter carefully and your question should be answered. If you already implemented it using a class, perhaps you should design a module for the other half of the question.