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From: Keith Thompson <kst-u@mib.org>
Newsgroups: comp.lang.c
Subject: Re: C Programming Tutorial on Youtube
Date: Mon, 17 Oct 2016 12:39:47 -0700
Organization: None to speak of
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Ian Collins <ian-news@hotmail.com> writes:
> On 10/18/16 01:27 AM, Malcolm McLean wrote:
>> On Saturday, October 15, 2016 at 3:09:38 AM UTC+1, Richard Damon wrote:
>>> On 10/11/16 9:55 PM, Keith Thompson wrote:
>>>
>>> IF you want a constant pointer to a 'buffer' of ints:
>>>
>>>
>>> int buffer[1024][
>>>
>>> int * const pointer = buffer;
>>>
>>>
>>> pointer now IS a constant pointer to the array buffer. accessable int by
>>> int.
>>>
>> Yes, but you almost never need to do that. It's not something you are likely to
>> see in any real code.
>
> It's something you get to see very often in "real code".  Traversing a 
> buffer is a far from uncommon activity.

`pointer` is a const pointer, not a pointer to a const target.
You can't use it to traverse `buffer`; `pointer++` is a constraint
violation.  (You could use `pointer + offset` or `pointer[index]`,
but then you might as well use `buffer` rather than `pointer`.)

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"