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Re: what is the difference between these statement

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jgk@panix.com (Joe keane) writes:
> In article <87k40lucf6.fsf@temporary-address.org.uk>,
> Dr Nick  <3-nospam@temporary-address.org.uk> wrote:
>>Except in a pathological case where EOF cast to unsigned char turns into
>>a space character I suppose - could that actually happen?
>
> Why not?  There are codes where blank is zero.  One can easily imagine
> 0x100 for a value of EOF (especially 8-bit machines).  Even if there is
> null and space, do we know that 'isspace' is false for null?

C can't use an encoding where ' ' == '\0'; the null character has to be
distinct from any other character value.

(The only such encoding I'm aware of is the one for Knuth's MIX
processor; I'm sure there have been others, but presumably they're all
obsolete.)

The GSM 7-bit and 8-bit character encodings
<http://en.wikipedia.org/wiki/GSM_03.38> use 0x00 for '@'; '@' isn't
part of C's basic character set, but still I presume that software that
deals with it can't use C's string functions to process it.

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
    Will write code for food.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"

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what is the difference between these statement ashu <ashishmourya21@gmail.com> - 2012-05-06 04:11 -0700
  Re: what is the difference between these statement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-05-06 12:29 +0100
    Re: what is the difference between these statement ashu <ashishmourya21@gmail.com> - 2012-05-06 07:56 -0700
    Re: what is the difference between these statement ashu <ashishmourya21@gmail.com> - 2012-05-06 08:01 -0700
      Re: what is the difference between these statement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-05-06 18:54 +0100
  Re: what is the difference between these statement Dr Nick <3-nospam@temporary-address.org.uk> - 2012-05-06 15:39 +0100
    Re: what is the difference between these statement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-05-06 18:32 +0100
      Re: what is the difference between these statement Dr Nick <3-nospam@temporary-address.org.uk> - 2012-05-06 19:23 +0100
        Re: what is the difference between these statement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-05-06 22:52 +0100
          Re: what is the difference between these statement Dr Nick <3-nospam@temporary-address.org.uk> - 2012-05-07 08:08 +0100
            Re: what is the difference between these statement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-05-07 12:44 +0100
              Re: what is the difference between these statement Dr Nick <3-nospam@temporary-address.org.uk> - 2012-05-09 06:54 +0100
                Re: what is the difference between these statement James Kuyper <jameskuyper@verizon.net> - 2012-05-09 07:46 -0400
                Re: what is the difference between these statement Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-05-09 15:32 +0100
                Re: what is the difference between these statement Tim Rentsch <txr@alumni.caltech.edu> - 2012-05-09 12:02 -0700
                Re: what is the difference between these statement jgk@panix.com (Joe keane) - 2012-05-10 17:46 +0000
                Re: what is the difference between these statement Keith Thompson <kst-u@mib.org> - 2012-05-10 11:47 -0700
                Re: what is the difference between these statement Tim Rentsch <txr@alumni.caltech.edu> - 2012-05-11 08:55 -0700
                Re: what is the difference between these statement jgk@panix.com (Joe keane) - 2012-05-13 20:09 +0000
                Re: what is the difference between these statement Kaz Kylheku <kaz@kylheku.com> - 2012-05-13 23:24 +0000
                Re: what is the difference between these statement Tim Rentsch <txr@alumni.caltech.edu> - 2012-05-14 11:46 -0700

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