How can I get this code to work in Objective C?

Hi, I purchased and downloaded this code, but I don't know how to adapt it for Objective C.

I added that question to the Open Forum for CodeCogs: http://www.codecogs.com/pages/forums/pagegen.php?id=2410 Modifying Namespace to work in Objective C

I know I did not pay much for this code, but I'm confused, and truly would like to use it, rather than code it myself. "namespace" is not allowed in Objective C. Thanks.