Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!sdd.hp.com!think.com!mintaka!snorkelwacker.mit.edu!thunder.mcrcim.mcgill.edu!bonnie.concordia.ca!s3!robert
From: robert@ireq.hydro.qc.ca (R.Meunier 8516)
Newsgroups: comp.lang.c++
Subject: mixing c++ and c - SUMMARY
Message-ID: <5279@s3.ireq.hydro.qc.ca>
Date: 6 Feb 91 22:03:38 GMT
Sender: root@s3.ireq.hydro.qc.ca
Reply-To: robert@ireq.hydro.qc.ca ()
Organization: IREQ, Hydro-Quebec, QC, Canada
Lines: 57



	Contrary to what most people think, it is possible to mix c++
function with c. Here is how i have done it.


-------------------------------------------------------------
class A
{
private:
	int	i;
public:
	A(int);
	int inc();
}

A::A(int ii)
{
	i=ii;
}

A::inc()
{
	return(++i);
}

caddr_t newA(int ii)
{
	return(new A(ii));
}

int	incA(A *a)
{
	return(a->inc());
}
-------------------------------------------------------------

That code is compile with a c++ compiler and put in a library

	If i need that class in a standard c program, i call only
the function newA() and incA(). Their name is not mangle since
they are standard function. The c++ library libC.a as to be
provide to the compiler and someone have mention by mail that
the function _main() as to be called manually to initialise
static variables in classes.

	I did not search very much but 'cout' were crashing my program,
since i didn't need them, i took them out.

Thank you to everyone who have replied 


--
Robert Meunier                     Institut de Recherche d'Hydro-Quebec
Ingenieur                          1800 Montee Ste-Julie, Varennes
Internet: robert@ireq.hydro.qc.ca  Qc, Canada, J3X 1S1 
maintainer: BASIC mailing list request to basic-request@ireq.hydro.qc.ca