Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very bad programs. Stay away. Buy the book instead.

This is a disk with programs from the book Numerical Recipes. There are no comments in the code, help file is just an index of routines without any explanations. Routines are translations of Fortran code into C but authors did not make any effort to conform to standard C conventions. All the arrays start at 1 instead of 0 which makes the code useless the way it is written - user must modify it. No const attribute is ever used. And this is plain C so if you write a C++ code and hope for seeing exceptions or references, forget it. You are better off buying a book and writing routines you need based on the published code. It is really a shame that such a thing is sold (and tremendously overpriced). jstrompf@soil.nl in his review obviously meant the book and not the CD-ROM, his positive review is misplaced.