FIT SDK newbie here.  I need to write some simple software that will read in a FIT file and then do some calculations on it.  I want to be able to write both Mac and Windows versions, and I can write it in C, C++, or Java.   Which language is easiest to work with across platforms?  I.e.  I want to write one version of the software and be able to easily compile it on both machines with as little hassle and extra setup/learning/changes as possible.  Thanks!