Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!mentor.cc.purdue.edu!pur-ee!pur-phy!sho
From: sho@pur-phy (Sho Kuwamoto)
Newsgroups: comp.lang.c
Subject: Re: Another silly question
Message-ID: <2238@pur-phy>
Date: 3 May 89 07:24:42 GMT
References: <2459@nmtsun.nmt.edu> <9987@claris.com> <879@twwells.uucp> <17812@cup.portal.com>
Reply-To: sho@newton.physics.purdue.edu.UUCP (Sho Kuwamoto)
Organization: Purdue Univ. Physics Dept., W. Lafayette, IN
Lines: 18

In article <17812@cup.portal.com> Tim_CDC_Roberts@cup.portal.com writes:
>If I mix two pointer types, as in
>  char * c;
>  long * ell;
>     return c + ell;
>is this anarchy?  Is it a syntax error?  What is sizeof(*(c+ell))?

This should be a syntax error.  Even
  long *a, *b;
  return(a+b)
is illegal.  However,
  long *a, *b;
  return(a-b); 
Is legit.  If a and b are pointers to different types, it is probably
still a syntax error.  On the other hand, I could be wrong.  I got
mildly crisped last time I fielded a question...

-Sho