Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uwm.edu!rpi!leah!sc7088
From: sc7088@leah.Albany.Edu (S Chakrabarti)
Newsgroups: comp.lang.c++
Subject: extenrn "C" problem
Message-ID: <3107@leah.Albany.Edu>
Date: 31 May 90 18:47:17 GMT
Organization: The University at Albany, Computer Services Center
Lines: 43

Hi folks,
I am trying to port the AT & T voice library (written in C) to C++.
I do not have any source code available for the library functions.
All I have is the header file and the library archive.
The problem I encounter is that one of the header files contains
a varible called class. When I try to compile, it gives me error, since
"class" is reserved word for C++ compiler. Do you have any suggestion how
can I get around this problem without editing the sysmbol table of the 
binary archive ?

my program looks like as following :
extern "C" {
#include <sys/v2.h>
#include <sys/vl.h>
#include <fnctl.h>
}

and the v2.h has a structure which has a field called "class".

Thanks in advance. I will really appreciate if any of you send me email
at sc7088@cs.albany.edu.  This is very URGENT to my project.


I have another question to the advanced users of C++.
Usually when a library header file is ported to C++ version its
usually done in the following way :

#define  localtime   _____localtime

extern  char * localtime()
#undef _____localtime
extern "C" {
char * localtime(...)
}

Why do we require to define and undefine them at the beginning ? I am still
not sure why it is done this way.

Please answer me at the email address  sc7088@cs.albany.edu

Thanks again.

Samita Chakrabarti