Don't put variable declarations in header files, IMO. Make a globals.c file and put them in there. Then, in a globals.h file, put an extern and that is what the other .c files will use. 5.

In C programming, a source code file that contains common definitions and data structures that all programmers may use as required. Also called "include files," because the #include statement is ...

Linux Fu: Automatic Header File Generation November 8, 2021 by Al Williams 22 Comments I’ve tried a lot of the “newer” languages and, somehow, I’m always happiest when I go back to C++ or ...

Basically once you've put a using namespace std; in your header, and someone has included your header, there's no way to undo the using. This can reduce your options when a name conflict occurs.