Path: utzoo!utgpu!water!watmath!clyde!rutgers!soleil!geigel
From: geigel@soleil.UUCP (Joe Geigel)
Newsgroups: comp.lang.c
Subject: Is NULL == 0 always true?
Keywords: NULL,
Message-ID: <134@soleil.UUCP>
Date: 7 Jan 88 22:19:22 GMT
Organization: GE Solid State, Somerville, NJ
Lines: 22


 I have a question for you all.  Is NULL always equivalent to the value 0?
 I know it is in many implementations of C but is it always defined to be so?

 The reason being is that a friend of mine was using the following in
 a routine of his:
 
        if (ptr = strchr (str,'\')) {
              .
              .
              .
        }

 I argued that although this may work in the C we are using (VAX-C), it
 may not be totally portable to other systems.

 I am correct in saying this? Any words of wisdom would be appriciated.
 Thanks.

                                         -- jogle
                                            ...!rutgers!soleil!geigel
                                            jmg%smvl.decnet@GE-CRD.arpa