Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!pilchuck!dataio!bright
From: bright@Data-IO.COM (Walter Bright)
Newsgroups: comp.lang.c++
Subject: Re: Using C++ lib with regular C code?
Keywords: Help
Message-ID: <2204@dataio.Data-IO.COM>
Date: 13 Nov 89 20:09:45 GMT
References: <1644@netxcom.DHL.COM>
Reply-To: bright@dataio.Data-IO.COM (Walter Bright)
Organization: Data I/O Corporation; Redmond, WA
Lines: 15

In article <1644@netxcom.DHL.COM> ewiles@netxdev.DHL.COM (Edwin Wiles) writes:
<So, my question is, how much trouble would it be to use a library written
<in C++ with code that is written in plain old C?

Construct C "wrapper" functions around your C++ code, and then document
the interface as the C interface, as in:

extern "C" int func(int a)
{
	return cppfunc(a);
}

C and C++ functions may (and do in ZTC++) use different function calling
sequences. It's not good enough to directly call the 'mangled' function
name from a C file.