From:	"John M. Aldrich" <fighteer AT cs DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: c and c++ in the same program?
Date:	Wed, 15 Jan 1997 19:02:05 -0800
Organization:	Two pounds of chaos and a pinch of salt
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Message-ID:	<32DD9A2D.3505@cs.com>
References:	<32dd111a DOT 70513538 AT redwood DOT cs DOT sc DOT edu>
Reply-To:	fighteer AT cs DOT com
NNTP-Posting-Host:	ppp105.cs.com
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Daniel Boyer wrote:
> 
> My question
> is can I intermix the code or do I have to rewrite it all (I only know
> bare minimal C...I when straight from pascal to C++ without ever being
> taught C, so I don't really want to go back and try to learn C just
> for this program.)? Thanks,  Daniel Boyer

It's not very difficult.  Take any code that is written in C and wrap
its declaration in "extern C { ... }".  This instructs the compiler not
to name-mangle the resulting identifiers according to C++ rules, but
rather to leave them alone and call them as C functions.  You need to
put the "extern C" bit in the header file(s) that declare the C
functions.

BTW, this doesn't interfere with those same header files being used for
C programs.  Take a look at any of the DJGPP header files to see how
they handle it.

-- 
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| John M. Aldrich, aka Fighteer I  |        fighteer AT cs DOT com         |
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