Re: Recursion, Yo

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From	Keith Thompson <Keith.S.Thompson+u@gmail.com>
Newsgroups	comp.lang.c
Subject	Re: Recursion, Yo
Date	Mon, 15 Apr 2024 08:46:17 -0700
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Janis Papanagnou <janis_papanagnou+ng@hotmail.com> writes:
> On 14.04.2024 02:29, Michael S wrote:
>> On Sun, 14 Apr 2024 00:23:44 +0100
>> Ben Bacarisse <ben.usenet@bsb.me.uk> wrote:
>> 
>>> Michael S <already5chosen@yahoo.com> writes:
>>>
>>>> On Sat, 13 Apr 2024 00:13:36 -0000 (UTC)
>>>> Lawrence D'Oliveiro <ldo@nz.invalid> wrote:
>>>>  
>>>>> On Fri, 12 Apr 2024 14:35:47 +0200, Janis Papanagnou wrote:
>>>>>   
>>>>>> It seems that's one of the fundamental differences between
>>>>>> (low-level) languages that want to provide such technical factors
>>>>>> explicit to the user and between languages that want to provide a
>>>>>> higher abstraction.
>>>>>>
>>>>>> Algol 60, Pascal, Simula 67 and Algol 60, Eiffel, etc. all took
>>>>>> that approach.    
>>>>>
>>>>> Pascal had explicit pointers, though. Algol 68 and Ada did not.  
>>>>
>>>> Of course, Ada has pointers. The are called access types.
>>>> https://en.wikibooks.org/wiki/Ada_Programming/Types/access
>>>>
>>>> I never learned Algol-68, but considering your reputation I'd want
>>>> to see confirmation from more reliable source.  
>>>
>>> I suppose it all depends on what constitutes a pointer, but Algol 68
>>> has pointers to this extent:
>>>
>>> BEGIN
>>>    INT i := 42;
>>>    [3] INT a := (1, 2, 3);
>>>
>>>    REF INT p := i;   CO p is a "pointer" to i
>>> CO REF INT(p) := 99; CO changes i via p
>>> CO p := a[2];        CO p now points to the second element of array a
>>> CO REF INT(p) := 99; CO change that element via p
>>> CO
>>>
>>>    print((i, a[1], a[2], a[3]))
>>> END
>>>
>>> I'd call p a pointer.
>>>
>> 
>> Thank you.
>> It looks closer to C than to Pascal, i.e. pointer can point to any
>> object rather than just to dynamically allocated object.
>
> The major difference is that they are closely bound to the type.
> In that respect they are more like Pascal pointers. C pointers
> open the can of issues with arithmetic on pointer values. You
> don't find that in Pascal or Algol 68.
[...]

How are C pointers not "closely bound to the type"?

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

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Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-07 02:58 +0000
  Re: Recursion, Yo fir <fir@grunge.pl> - 2024-04-07 11:52 +0200
    Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-09 10:25 +0200
      Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-09 08:43 +0000
        Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-09 14:27 +0200
          Re: Recursion, Yo Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-04-09 15:27 +0100
            Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-09 21:55 +0200
              Re: Recursion, Yo Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-04-09 13:31 -0700
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-10 08:30 +0200
        Re: Recursion, Yo bart <bc@freeuk.com> - 2024-04-09 15:02 +0100
      Re: Recursion, Yo Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-04-09 11:44 +0100
        Re: Recursion, Yo Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-04-09 13:25 +0100
        Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-10 01:50 +0000
          Re: Recursion, Yo "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-04-09 20:54 -0700
          Re: Recursion, Yo David Brown <david.brown@hesbynett.no> - 2024-04-10 09:11 +0200
            Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-10 07:52 +0000
              Re: Recursion, Yo David Brown <david.brown@hesbynett.no> - 2024-04-10 11:18 +0200
                Re: Recursion, Yo bart <bc@freeuk.com> - 2024-04-10 13:42 +0100
                Re: Recursion, Yo David Brown <david.brown@hesbynett.no> - 2024-04-10 16:46 +0200
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-11 00:18 +0000
                Re: Recursion, Yo Kaz Kylheku <643-408-1753@kylheku.com> - 2024-04-11 00:54 +0000
                Heh heh...  (Was: Recursion, Yo) gazelle@shell.xmission.com (Kenny McCormack) - 2024-04-11 08:00 +0000
                Re: Heh heh...  (Was: Recursion, Yo) Kaz Kylheku <643-408-1753@kylheku.com> - 2024-04-11 15:13 +0000
                Re: Heh heh...  (Was: Recursion, Yo) gazelle@shell.xmission.com (Kenny McCormack) - 2024-04-11 19:06 +0000
                Re: Recursion, Yo Kaz Kylheku <643-408-1753@kylheku.com> - 2024-04-11 15:04 +0000
                Re: Recursion, Yo David Brown <david.brown@hesbynett.no> - 2024-04-11 20:47 +0200
                Re: Recursion, Yo scott@slp53.sl.home (Scott Lurndal) - 2024-04-11 15:15 +0000
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-12 02:31 +0000
                Re: Recursion, Yo Kaz Kylheku <643-408-1753@kylheku.com> - 2024-04-12 03:51 +0000
                Re: Recursion, Yo cross@spitfire.i.gajendra.net (Dan Cross) - 2024-04-12 12:51 +0000
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-12 07:32 +0200
                Re: Recursion, Yo David Brown <david.brown@hesbynett.no> - 2024-04-12 09:30 +0200
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-12 15:03 +0200
                Re: Recursion, Yo David Brown <david.brown@hesbynett.no> - 2024-04-12 16:51 +0200
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-13 19:17 +0200
                Re: Recursion, Yo David Brown <david.brown@hesbynett.no> - 2024-04-13 20:04 +0200
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-13 00:10 +0000
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-12 07:34 +0000
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-12 14:35 +0200
                Re: Recursion, Yo bart <bc@freeuk.com> - 2024-04-12 16:42 +0100
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-13 00:13 +0000
                Re: Recursion, Yo Michael S <already5chosen@yahoo.com> - 2024-04-13 20:33 +0300
                Re: Recursion, Yo Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-04-14 00:23 +0100
                Re: Recursion, Yo Michael S <already5chosen@yahoo.com> - 2024-04-14 03:29 +0300
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-15 15:07 +0200
                Re: Recursion, Yo Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-04-15 08:46 -0700
                Re: Recursion, Yo Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-04-15 17:47 +0100
                Re: Recursion, Yo Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-04-15 12:00 -0700
                Re: Recursion, Yo bart <bc@freeuk.com> - 2024-04-15 20:24 +0100
                Re: Recursion, Yo Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-04-15 21:37 +0100
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-15 22:39 +0200
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-15 22:54 +0200
                Re: Recursion, Yo Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-04-15 14:25 -0700
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-14 00:29 +0000
                Re: Recursion, Yo Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-04-13 20:05 -0700
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-13 19:37 +0200
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-14 00:28 +0000
                Re: Recursion, Yo Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-04-14 11:17 +0100
                Re: Recursion, Yo bart <bc@freeuk.com> - 2024-04-14 13:51 +0100
                Re: Recursion, Yo Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-04-14 22:47 +0100
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-14 22:44 +0000
                Re: Recursion, Yo "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-04-14 20:35 -0700
                Re: Recursion, Yo Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-04-15 17:50 +0100
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-15 22:30 +0000
                Re: Recursion, Yo Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-04-17 18:09 +0100
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-17 22:12 +0000
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-22 18:06 +0200
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-15 20:36 +0200
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-15 22:32 +0000
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-22 17:41 +0200
                Re: Recursion, Yo Michael S <already5chosen@yahoo.com> - 2024-04-16 23:11 +0300
                Re: Recursion, Yo Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-04-19 08:26 -0700
                Re: Recursion, Yo scott@slp53.sl.home (Scott Lurndal) - 2024-04-19 18:25 +0000
                Re: Recursion, Yo Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-04-19 12:15 -0700
                Re: Recursion, Yo Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-04-20 05:55 -0700
                Re: Recursion, Yo bart <bc@freeuk.com> - 2024-04-19 19:34 +0100
                Re: Recursion, Yo Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-04-20 02:11 +0100
                Re: Recursion, Yo Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-04-19 18:24 -0700
                Re: Recursion, Yo Kaz Kylheku <643-408-1753@kylheku.com> - 2024-04-20 15:35 +0000
                Re: Recursion, Yo Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-04-19 12:18 -0700
                Re: Recursion, Yo Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-04-20 06:03 -0700
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-22 17:49 +0200
                Re: Recursion, Yo Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-04-15 17:50 +0100
                Re: Recursion, Yo bart <bc@freeuk.com> - 2024-04-12 10:38 +0100
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-12 15:07 +0200
                Re: Recursion, Yo bart <bc@freeuk.com> - 2024-04-12 16:38 +0100
                Re: Recursion, Yo Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-04-12 19:06 -0700
                Re: Recursion, Yo Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-04-13 07:46 -0700
                Re: Recursion, Yo scott@slp53.sl.home (Scott Lurndal) - 2024-04-11 14:36 +0000
                Re: Recursion, Yo David Brown <david.brown@hesbynett.no> - 2024-04-11 10:15 +0200
                Re: Recursion, Yo Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-04-11 12:37 -0700
                Re: Recursion, Yo David Brown <david.brown@hesbynett.no> - 2024-04-12 09:38 +0200
                Re: Recursion, Yo fir <fir@grunge.pl> - 2024-04-14 20:34 +0200
                Re: Recursion, Yo Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-04-10 15:18 +0200
                Re: Recursion, Yo scott@slp53.sl.home (Scott Lurndal) - 2024-04-10 14:23 +0000
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-11 00:16 +0000
                Re: Recursion, Yo scott@slp53.sl.home (Scott Lurndal) - 2024-04-11 14:34 +0000
                Re: Recursion, Yo Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-04-12 00:04 +0100
                Re: Recursion, Yo Kaz Kylheku <643-408-1753@kylheku.com> - 2024-04-10 17:19 +0000
                Re: Recursion, Yo David Brown <david.brown@hesbynett.no> - 2024-04-10 21:19 +0200
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-11 00:54 +0000
                Re: Recursion, Yo Kaz Kylheku <643-408-1753@kylheku.com> - 2024-04-11 02:06 +0000
                Re: Recursion, Yo David Brown <david.brown@hesbynett.no> - 2024-04-11 10:23 +0200
                Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-11 08:34 +0000
            Re: Recursion, Yo Kaz Kylheku <643-408-1753@kylheku.com> - 2024-04-10 17:10 +0000
          Re: Recursion, Yo Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-04-10 10:14 -0700
  Re: Recursion, Yo Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-04-09 08:44 +0000

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