Re: About header files

Richard Heathfield wrote:

Thus, I include the header files. main.c also uses stdlib.c
and stdio.h. Do I include them again or do I use inclusion guards to
check if they are already included (e.g. in functions.c)?

Include them as often as you like. They are already protected by inclusion guards.

And that is the case for all standard headers?

Do I HAVE to
declare the function prototype as extern in the header file?

No. For functions, it's the default, and it can be omitted. Indeed, it almost always /is/ omitted.

Interesting. Thank you.

Chris
.

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