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Groups > comp.lang.c > #383206
| From | Keith Thompson <Keith.S.Thompson+u@gmail.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: Implicit String-Literal Concatenation |
| Date | 2024-02-29 14:14 -0800 |
| Organization | None to speak of |
| Message-ID | <87bk7ysysj.fsf@nosuchdomain.example.com> (permalink) |
| References | (8 earlier) <urq4fe$lapm$1@dont-email.me> <urq7fd$lupv$1@dont-email.me> <urqrsu$q361$1@dont-email.me> <87o7bzrll5.fsf@nosuchdomain.example.com> <urquvb$qn8n$2@dont-email.me> |
"Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> writes:
> On 2/29/2024 1:45 PM, Keith Thompson wrote:
>> "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> writes:
>>> On 2/29/2024 7:22 AM, Richard Harnden wrote:
>>>> On 29/02/2024 14:31, bart wrote:
>> [...]
>>>>> Not here:
>>>>>
>>>>> char s[] = "ABC";
>>>>> char t[3] = "DEF";
>>>>>
>>>>> The "DEF" string doesn't end with a zero.
>>>> And is, therefore, not a string.
>>> [...]
>>>
>>> Right. However, is this a string or two embedded strings:
>>>
>>> char x[] = "ABC\0DEF"
> ^^^^^^^^^^^^^^^^^^^^^
>
>> Is *what* a string or two embedded strings?
>
> For some reason, I see two "embedded" "C strings" wrt null termination here.
I was asking you to clarify what you're referring to. What you posted
is a declaration, not a string. You could have been referring to the
object x, to the string literal, to subsets of either, or to something else.
>> x as a whole does not contain a string, but there are 8 strings within it.
>
> Well, I was referring to that null terminator. So I see two "C
> strings" separated by an offset? Wrt using std functions that
> terminate on a '\0'?
>
> I think I am misunderstanding you. Sorry... ;^o
I thought I explained it, but here's a more straightforward explanation.
And the term "string" is defined by 7.1.1p1, not by the behavior of
standard functions: "A *string* is a contiguous sequence of characters
terminated by and including the first null character."
At run time, the array `x` contains:
- A string of length 3 starting at index 0.
- A string of length 2 starting at index 1.
- A string of length 1 starting at index 2.
- A string of length 0 starting at index 3.
- A string of length 3 starting at index 4.
- A string of length 2 starting at index 5.
- A string of length 1 starting at index 6.
- A string of length 0 starting at index 7.
#include <stdio.h>
int main(void) {
char x[] = "ABC\0DEF";
for (size_t i = 0; i < sizeof x; i ++) {
printf("x[%zu] is a pointer to the string \"%s\"\n", i, x+i);
}
}
Output:
x[0] is a pointer to the string "ABC"
x[1] is a pointer to the string "BC"
x[2] is a pointer to the string "C"
x[3] is a pointer to the string ""
x[4] is a pointer to the string "DEF"
x[5] is a pointer to the string "EF"
x[6] is a pointer to the string "F"
x[7] is a pointer to the string ""
--
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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Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-24 23:05 +0000
Re: Implicit String-Literal Concatenation Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-25 17:38 +0100
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-25 20:43 +0000
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-02-25 21:20 +0000
Re: Implicit String-Literal Concatenation Blue-Maned_Hawk <bluemanedhawk@invalid.invalid> - 2024-02-25 16:45 +0000
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-25 20:25 +0000
Re: Implicit String-Literal Concatenation Łukasz 'Maly' Ostrowski <l3vi4than@gmail.com> - 2024-02-26 21:12 +0100
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-26 20:31 +0000
Re: Implicit String-Literal Concatenation Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-27 13:18 +0100
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-27 23:10 +0000
Re: Implicit String-Literal Concatenation Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-28 00:50 +0100
Re: Implicit String-Literal Concatenation Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-26 20:42 +0000
Re: Implicit String-Literal Concatenation porkchop@invalid.foo (Mike Sanders) - 2024-02-26 22:03 +0000
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-26 23:17 +0000
Re: Implicit String-Literal Concatenation porkchop@invalid.foo (Mike Sanders) - 2024-02-27 17:27 +0000
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-02-27 09:36 +0100
Re: Implicit String-Literal Concatenation porkchop@invalid.foo (Mike Sanders) - 2024-02-27 17:31 +0000
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-02-27 18:56 +0000
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-02-27 23:21 +0100
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-27 22:52 +0000
Re: Implicit String-Literal Concatenation Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-28 01:09 +0000
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-02-28 12:50 +0100
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-28 20:56 +0000
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-02-28 21:34 +0000
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-28 23:52 +0000
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-02-29 00:15 +0000
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-29 02:53 +0000
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-02-29 09:20 +0000
Re: Implicit String-Literal Concatenation scott@slp53.sl.home (Scott Lurndal) - 2024-02-29 15:48 +0000
Re: Implicit String-Literal Concatenation Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-29 17:03 +0100
Re: Implicit String-Literal Concatenation scott@slp53.sl.home (Scott Lurndal) - 2024-02-29 16:17 +0000
Re: Implicit String-Literal Concatenation Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-29 18:12 +0100
Re: Implicit String-Literal Concatenation scott@slp53.sl.home (Scott Lurndal) - 2024-02-29 17:30 +0000
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-29 13:20 -0800
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-02-29 21:44 +0000
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-29 14:06 -0800
Re: Implicit String-Literal Concatenation Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-01 18:09 +0100
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-01 10:49 -0800
Re: Implicit String-Literal Concatenation Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-01 22:06 +0100
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-29 09:20 -0800
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-02-29 08:58 +0100
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-29 21:05 +0000
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-03-01 09:16 +0100
Re: Implicit String-Literal Concatenation Kaz Kylheku <433-929-6894@kylheku.com> - 2024-03-01 16:55 +0000
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-03-01 18:28 +0100
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-27 20:25 +0000
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-27 12:35 -0800
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-27 23:03 +0000
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-02-27 22:12 +0000
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-02-28 12:54 +0100
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-02-28 13:13 +0000
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-02-28 15:08 +0100
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-28 13:36 -0800
Re: Implicit String-Literal Concatenation Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-02-29 11:56 +0000
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-02-29 16:19 +0100
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-29 21:36 +0000
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-29 13:53 -0800
Re: Implicit String-Literal Concatenation Richard Harnden <richard.nospam@gmail.invalid> - 2024-03-01 12:59 +0000
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-03-01 20:59 +0000
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-29 08:08 -0800
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-02-29 14:31 +0000
Re: Implicit String-Literal Concatenation Richard Harnden <richard.nospam@gmail.invalid> - 2024-02-29 15:22 +0000
Re: Implicit String-Literal Concatenation "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-02-29 13:10 -0800
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-29 13:45 -0800
Re: Implicit String-Literal Concatenation "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-02-29 14:03 -0800
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-29 14:14 -0800
Re: Implicit String-Literal Concatenation "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-03-02 13:48 -0800
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-03-05 04:48 +0000
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-04 20:55 -0800
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-03-07 21:08 +0000
Re: Implicit String-Literal Concatenation Kaz Kylheku <433-929-6894@kylheku.com> - 2024-03-07 21:44 +0000
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-07 14:25 -0800
Re: Implicit String-Literal Concatenation Kaz Kylheku <433-929-6894@kylheku.com> - 2024-03-07 23:00 +0000
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-07 15:46 -0800
Re: Implicit String-Literal Concatenation "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-03-07 16:17 -0800
Re: Implicit String-Literal Concatenation Richard Harnden <richard.nospam@gmail.invalid> - 2024-03-08 00:26 +0000
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-07 14:16 -0800
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-02-29 16:30 +0100
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-29 08:25 -0800
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-29 08:18 -0800
Re: Implicit String-Literal Concatenation Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-29 18:17 +0100
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-29 09:22 -0800
Re: Implicit String-Literal Concatenation Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-29 19:26 +0000
Re: Implicit String-Literal Concatenation James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-02-29 14:45 -0500
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-28 13:41 -0800
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-28 13:57 -0800
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-02-28 23:01 +0000
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-28 15:31 -0800
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-02-29 00:47 +0000
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-28 17:12 -0800
Re: Implicit String-Literal Concatenation tTh <tth@none.invalid> - 2024-02-29 16:29 +0100
Re: Implicit String-Literal Concatenation scott@slp53.sl.home (Scott Lurndal) - 2024-02-29 16:15 +0000
Re: Implicit String-Literal Concatenation scott@slp53.sl.home (Scott Lurndal) - 2024-02-29 15:53 +0000
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-29 09:06 -0800
Re: Implicit String-Literal Concatenation scott@slp53.sl.home (Scott Lurndal) - 2024-02-29 17:28 +0000
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-02-29 18:58 +0100
Re: Implicit String-Literal Concatenation scott@slp53.sl.home (Scott Lurndal) - 2024-02-29 18:05 +0000
Re: Implicit String-Literal Concatenation scott@slp53.sl.home (Scott Lurndal) - 2024-02-29 18:09 +0000
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-29 21:27 +0000
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-03-01 11:52 +0000
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-03-05 04:47 +0000
Re: Implicit String-Literal Concatenation scott@slp53.sl.home (Scott Lurndal) - 2024-03-05 15:09 +0000
Re: Implicit String-Literal Concatenation Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-03-06 01:49 +0000
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-02-29 20:51 +0100
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-02-29 10:10 +0100
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-02-29 10:18 +0000
Re: Implicit String-Literal Concatenation tTh <tth@none.invalid> - 2024-02-29 16:34 +0100
Re: Implicit String-Literal Concatenation bart <bc@freeuk.com> - 2024-03-01 11:58 +0000
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-03-01 13:17 +0100
Re: Implicit String-Literal Concatenation Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-29 09:03 -0800
Re: Implicit String-Literal Concatenation David Brown <david.brown@hesbynett.no> - 2024-02-29 19:08 +0100
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