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NNTP-Posting-Date: Thu, 11 Aug 2016 13:54:45 -0500
From: Gareth Owen <gwowen@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: Difference between these pointer syntaxes
References: <nodpg5$cr7$1@dont-email.me> <8737mdh47k.fsf@bsb.me.uk>
Date: Thu, 11 Aug 2016 19:54:45 +0100
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Ben Bacarisse <ben.usenet@bsb.me.uk> writes:

> eva galois <eva.galois@yandex.ru> writes:
>
>> Could someone explain (compiler and/or assembly level) differences
>> between *(arr[i]) and (*arr)[i]? I'm interested in how they are evaluated.
>

[Snip comprehensive reply]

> The equivalence of E1[E2] and *(E1+E2) also means that *E can be written
> as E[0].  Thus your two examples are
>
>   arr[i][0]   and   arr[0][i]
>
> which, as you can see, shows that both could be seen as accessing a 2D
> structure of some sort.

Neat observation. I shall remember that.