From mboxrd@z Thu Jan  1 00:00:00 1970
From: wobblygong@gmail.com (Wesley Parish)
Date: Fri, 29 Dec 2017 21:26:25 +1300
Subject: [TUHS] origin of C header files
Message-ID: <CACNPpeYw3maUqXr8NxotW9FZMjhJmm-K9kEv2ma6SytiQB=1cg@mail.gmail.com>

Hi

I've just had an interesting experience, explaining C header files to
a nephew programmer who didn't understand them. I pointed him in the
direction of Minix as an example of a small well-engineered system
which would display their use.

Which raised the question: when did header files come into use? Who
was the first to use header files to store common system-wide or
application-wide data definitions? Was it used in any languages prior
to C?

Thanks

Wesley Parish