Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!rpi!uupsi!cmcl2!adm!smoke!gwyn
From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: Unnecessary parentheses (Was: Help: VAX C problem)
Message-ID: <15826@smoke.brl.mil>
Date: 15 Apr 91 21:33:11 GMT
References: <1991Apr1.203600.15721@zoo.toronto.edu> <1#.gqcm@rpi.edu> <3176@oucsace.cs.OHIOU.EDU>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 11

In article <3176@oucsace.cs.OHIOU.EDU> sadkins@oucsace.cs.OHIOU.EDU (Scott W. Adkins) writes:
>In this case, they do not indicate that one is a function and the other is 
>an operator.

sizeof is always a unary operator keyword, never a function name.
It can be validly used in two distinct ways:
	sizeof unary_expression
	sizeof ( type_name )

Some people put parentheses around the innards of their unary_expression,
but they are not required.  (Same as for the operand of "return".)