Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!sco!seanf
From: seanf@sco.COM (Sean Fagan)
Newsgroups: comp.lang.c
Subject: Re: difference between 'char *arr' and 'char arr []'
Message-ID: <8163@scolex.sco.COM>
Date: 12 Oct 90 04:28:18 GMT
References: <151805@felix.UUCP> <1990Oct4.234406.17473@alzabo.uucp> <49140@seismo.CSS.GOV>
Sender: news@sco.COM
Reply-To: seanf (Sean Fagan)
Organization: The Santa Cruz Operation, Inc.
Lines: 31


In article <49140@seismo.CSS.GOV> black@beno.CSS.GOV (Mike Black) writes:
>"The expression E1[E2] is identical (by definition) to *((E1)+(E2))..."
>2 paragraphs later, "...array names are CONVERTED to pointers" (my
>emphasis).  A seeming conflict for something that is identical.  

Uhm... no, it's not.  The syntax

	E1[E2]

works for pointers as well as arrays.  The normal use is

	ArrayName [ expr ];

Now, since array names are converted to pointers, we get

	(ArrayName_as_Pointer) [ expr ];

which is the same as

	*((ArrayName_as_Pointer) + (expr));

Where's the conflict?  Or don't people understand what was being said?  (I opt
for the latter, actually, but I tend to give novices one break 8-).)

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