If you're just going to stick a function prototype into the C file to stifle warnings, you might as well drop the warning level on your compiler to the point where it stops complaining about missing prototypes.

If the preceding paragraph describes you and are attempting to write C++, I'd suggest sticking to straight C. If you're going to shoot yourself in the foot, you might as make a nice, clean hole just behind the toes (C) rather than blowing your leg off from the knee down (C++).

Can you guess what set this off??