I\'m using VS 2010 Pro.
First, C doesn\'t have a bool type? I just have to use int with 0/1. Seems odd as most languages consider boolean a standard type.
Newest C standard (C99) has bool type indeed. Just include stdbool.h and you can use it. Unfortunately MSVC does not haver proper support for C at all. Only partial C89.
stdbool.h