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From: gwyn@BRL.ARPA (VLD/VMB)
Newsgroups: net.lang.c
Subject: Re:  VAX VMS C / UNIX C Compatibility -- Need Info
Message-ID: <540@brl-tgr.ARPA>
Date: Thu, 8-Aug-85 17:39:33 EDT
Article-I.D.: brl-tgr.540
Posted: Thu Aug  8 17:39:33 1985
Date-Received: Sun, 11-Aug-85 05:39:14 EDT
Sender: news@brl-tgr.ARPA
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If your C source code does not use UNIX-specific facilities, such as
fork(), and otherwise conforms to the language (plus library)
described in Kernighan & Ritchie, then it will probably port to VMS
C with little trouble.  There is a VMS C Handbook (brown cover) that
rather nicely describes the degree to which VMS C supports code from
other systems.

One of VMS's main advertising points is that all languages can be
intermixed, so undoubtedly you can link together C and Fortran
objects on VMS.

You really should be asking such questions of your DEC representative.