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Path: utzoo!mnetor!seismo!rutgers!ames!ucbcad!ucbvax!cartan!brahms!ballou
From: ballou@brahms (Kenneth R. Ballou)
Newsgroups: comp.lang.c
Subject: Re: incrementing after a cast
Message-ID: <491@cartan.Berkeley.EDU>
Date: Sat, 6-Dec-86 21:35:55 EST
Article-I.D.: cartan.491
Posted: Sat Dec  6 21:35:55 1986
Date-Received: Sun, 7-Dec-86 05:21:49 EST
References: <349@apple.UUCP> <7376@utzoo.UUCP> <1746@batcomputer.tn.cornell.edu>
Sender: daemon@cartan.Berkeley.EDU
Reply-To: ballou@brahms (Kenneth R. Ballou)
Organization: Math Dept. UC Berkeley
Lines: 13
Keywords: cast, increment, postincrement

In article <1746@batcomputer.tn.cornell.edu> braner@batcomputer.UUCP (braner) writes:

>If  ((sometype *)pointer)++ is not legal, then the law should be changed!

Why?

>(since the pointer-type cast is legal, why can't you use the resulting
>pointer like any pointer of sometype?)

You can use the *VALUE* of the pointer in exactly the same way as you could
use the *VALUE* of any other pointer.  Keep in mind that the pre/post-increment
operator requires one of those mythical beasts, an l-value.  Likewise, you
could not apply pre/post-increment to the result of a function call.