Scheme is crap, use QBasic! It''s MUCH BETTER!!!!

Kneelz.

You know, I''m going to close this. These are obvious homework questions, and pretty much any professor is going to consider this cheating.

Besides which, Scheme isn''t a particularly complicated language, nor are these problems all that difficult. Take the time to figure them out yourself or you''re going to have a hard time making it as a programmer.