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Re: Array of Integers ?

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On 11/08/2011 10:12 AM, Chad wrote:
> On Nov 8, 12:14 am, jacob navia <ja...@spamsink.net> wrote:
...
>> The person that told you that arrays of integers do not exist in C is
>> completely wrong.
>>
> 
> What about the following...
> 
> http://67.40.109.61/torek/c/expr.html

Note that at the top of that page, the author indicates use of
non-standard language. He claims to be using 'object' to refer to what
the standard calls an 'lvalue'. However, his actual use of the term
doesn't support that claim; he frequently uses that term in ways where
'lvalue' wouldn't fit; in those cases he's actually using it in pretty
much the same way the standard defines it.

> "Array objects have a special, fundamental rule in C.  This rule is
> essentially arbitrary, and simply must be memorized.  It falls out
> from a key fact: C does not have array values.  (There is one
> exception to this, which I will save for later.)  C does have array
> objects -- just the values are missing.  For instance, int a[5];
> declares an ordinary array containing five ints. Logically, the
> ‘value’ of this array ought to be the five int values stored in that
> array -- but it is not.  Instead, the ‘value’ of the array is a
> pointer to the first element of that array. "

That paragraph fails to correctly explain what's going on in expressions
like &a or sizeof a, but for most other expressions, it's close enough
to be useful. He gives something closer to the correct rule farther down.

The correct rule is in  6.3.2.1: "Except when it is the operand of the
sizeof operator or the unary & operator, or is a string literal used to
initialize an array, an expression that has type ‘‘array of type’’ is
converted to an expression with type ‘‘pointer to type’’ that points to
the initial element of the array object and is not an lvalue."

> The point being that, if I understand correctly, C does not have
> 'array of integers'. Instead, at least according to the former
> comp.lang.c regular on here, the language has 'array objects'.

The discussion has been about an "array of objects", not an "array
object". An array object has sub-objects called elements. Those elements
have a type, and an array of objects which have the type T are routinely
referred to as an "array of T"; this usage is common in the standard
itself. The first five examples I found of such usage were  6.2.5p20,
footnote 36, 6.2.5p29, 6.3.2.1p3, and 6.5p6; there's many more. Nothing
said on the page you're referring to is incompatible with that usage.

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Array of Integers ? arnuld <sunrise@invalid.address> - 2011-11-08 07:51 +0000
  Re: Array of Integers ? Ike Naar <ike@iceland.freeshell.org> - 2011-11-08 08:11 +0000
  Re: Array of Integers ? jacob navia <jacob@spamsink.net> - 2011-11-08 09:14 +0100
    Re: Array of Integers ? Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-11-08 00:23 -0800
      Re: Array of Integers ? pete <pfiland@mindspring.com> - 2011-11-08 04:07 -0500
    Re: Array of Integers ? tom st denis <tom@iahu.ca> - 2011-11-08 06:23 -0800
      Re: Array of Integers ? "Scott Fluhrer" <sfluhrer@ix.netcom.com> - 2011-11-08 10:08 -0500
      Re: Array of Integers ? Noob <root@127.0.0.1> - 2011-11-08 16:25 +0100
        Re: Array of Integers ? bks@panix.com (Bradley K. Sherman) - 2011-11-08 15:39 +0000
        Re: Array of Integers ? Keith Thompson <kst-u@mib.org> - 2011-11-08 13:48 -0800
          Re: Array of Integers ? Keith Thompson <kst-u@mib.org> - 2011-11-09 19:34 -0800
      Re: Array of Integers ? Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-11-08 06:59 -0800
      Re: Array of Integers ? jacob navia <jacob@spamsink.net> - 2011-11-08 22:48 +0100
    Re: Array of Integers ? Chad <cdalten@gmail.com> - 2011-11-08 07:12 -0800
      Re: Array of Integers ? pete <pfiland@mindspring.com> - 2011-11-08 11:49 -0500
      Re: Array of Integers ? James Kuyper <jameskuyper@verizon.net> - 2011-11-08 12:13 -0500
      Re: Array of Integers ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-11-08 21:45 +0000
        Re: Array of Integers ? James Kuyper <jameskuyper@verizon.net> - 2011-11-08 16:48 -0500
          Re: Array of Integers ? Keith Thompson <kst-u@mib.org> - 2011-11-08 14:25 -0800
          Re: Array of Integers ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-11-08 22:42 +0000
        Re: Array of Integers ? Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-11-10 12:01 +0200
          Re: Array of Integers ? Keith Thompson <kst-u@mib.org> - 2011-11-10 03:14 -0800
            Re: Array of Integers ? Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-11-10 17:41 +0200
              Re: Array of Integers ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-11-10 16:44 +0000
                Re: Array of Integers ? Keith Thompson <kst-u@mib.org> - 2011-11-10 10:59 -0800
                Re: Array of Integers ? Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-11-11 17:49 +0200
      Re: Array of Integers ? Keith Thompson <kst-u@mib.org> - 2011-11-08 14:00 -0800
        Re: Array of Integers ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-11-09 00:57 +0000
          Re: Array of Integers ? pete <pfiland@mindspring.com> - 2011-11-09 00:05 -0500
            Re: Array of Integers ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-11-09 11:06 +0000
              Re: Array of Integers ? Keith Thompson <kst-u@mib.org> - 2011-11-09 13:36 -0800
                Re: Array of Integers ? Tim Rentsch <txr@alumni.caltech.edu> - 2012-01-25 00:45 -0800
                Re: Array of Integers ? Keith Thompson <kst-u@mib.org> - 2012-01-25 02:56 -0800
              Re: Array of Integers ? pete <pfiland@mindspring.com> - 2011-11-09 18:34 -0500
                Re: Array of Integers ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-11-10 00:57 +0000
          Re: Array of Integers ? Keith Thompson <kst-u@mib.org> - 2011-11-08 22:14 -0800
            Re: Array of Integers ? Tim Rentsch <txr@alumni.caltech.edu> - 2012-01-25 01:46 -0800
  Re: Array of Integers ? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2011-11-08 01:39 -0800
    Re: Array of Integers ? Keith Thompson <kst-u@mib.org> - 2011-11-08 14:05 -0800
  Re: Array of Integers ? James Kuyper <jameskuyper@verizon.net> - 2011-11-08 06:19 -0500

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