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From: Keith Thompson <Keith.S.Thompson+u@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: C precedence - relative comparisons before equality operators
Date: Mon, 06 Sep 2021 17:20:51 -0700
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James Harris <james.harris.1@gmail.com> writes:
> On 06/09/2021 09:27, James Harris wrote:
>> On 05/09/2021 23:29, Stefan Ram wrote:
> ...
>
>>>    Kernighan/Ritchie wrote:
>>>
>>> |The == (equal to) and the != (not equal to) operators are
>>> |analogous to the relational operators except for their lower
>>> |precedence. (Thus a<b == c<d is 1 whenever a<b and c<d have
>>> |the same truth-value.)
>> Do you have a link to the source of that?
>
> No need to reply. I found it in A.7.10 of
>
>   https://[SNIP]/The_C_Programming_Language.pdf

That is almost certainly a pirated copy of K&R2, uploaded by an
individual at the institution who either did not know or did not care
that it's a copyright violation.  (Let's not have an argument about
whether "pirated" is the appropriate word, please.)

My paper copy of that book has a copyright notice just before the table
of contents.  It was omitted from the PDF, I presume deliberately.

If Bell Labs or Prentice Hall had ever given permission for K&R2 to be
freely published, I'm sure someone here would have heard about it.

Legitimate copies of K&R2 are available from various vendors, as are
used copies of K&R1 for those who are interested in the historical
context.

-- 
Keith Thompson (The_Other_Keith) Keith.S.Thompson+u@gmail.com
Working, but not speaking, for Philips
void Void(void) { Void(); } /* The recursive call of the void */