[plt-scheme] Eval & printf

I think I answered a little too fast

I understood that your eval call prints scheme code containing printf calls.
If you d'like to redirect eval prints, you can use the code I wrote,
otherwise, if you want that the evaluation of the printf calls prints
the result in a text%, use fprintf instead of printf.

Or maybe I really misunderstood the point.

-- 
Cyprien Nicolas
Undergraduate Student
Computer Science
University of Nice - Sophia Antipolis