Thread: static code analysis

Does anyone know any free/shareware/evaluation tool that can be used to perform static code analysis? I need something to find which variables a function uses, modifies (through pointers), or any global variables used in the function.
I was looking at codesurfer but it costs.
Thanks alot
Mark

I found a program called cxref that can be used to find out which variables are being used by which funciton etc