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Groups > comp.lang.c > #383336
| From | Keith Thompson <Keith.S.Thompson+u@gmail.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: getFirstDayOfMonth() |
| Date | 2024-03-04 14:50 -0800 |
| Organization | None to speak of |
| Message-ID | <87le6xr4r2.fsf@nosuchdomain.example.com> (permalink) |
| References | (4 earlier) <urtq7q$1ggh0$1@dont-email.me> <pZGEN.500996$7sbb.11881@fx16.iad> <us00f7$21v55$1@dont-email.me> <us1ein$2dfo0$1@dont-email.me> <us53ei$3993i$3@dont-email.me> |
porkchop@invalid.foo (Mike Sanders) writes:
> James Kuyper <jameskuyper@alumni.caltech.edu> wrote:
>> The lack of nuance is apparently the result of your being unaware of the
>> fact that 1 is not the only permitted error return.
>>
>> Keep in mind that the make utility and shells designed for Unix-like
>> systems (as well as many other programs targeting such systems) expect 0
>> for success, and may produce unexpected results if you violate that
>> convention.
>
> Not at all, what the shell accepts as success under unix, is not the
> same under windows. The convention is OS specific, everyone here tends
> to think only in terms of POSIX & $SHELL & yet, there are other worlds
> out there...
>
> :: comment
>
> @echo off & cls
>
> if %errorlevel% EQU 1000 (
>
> echo successful as defined by my needs not yours
>
> )
Sure, you can write a script that assumes 1000 indicates success -- but
it's just as non-idiomatic on Windows as on POSIX systems. (POSIX only
supports values from 0 to 255.)
some_command
if [ $? = 100 ] ; then
echo SUCCESS
else
echo FAILURE
fi
But Windows, like POSIX, has a convention than an exit code of zero
denotes success, and non-zero denotes an error. The convention probably
isn't as hardwired into the system on Windows as it is on POSIX, but
it's there.
For example, the documentation for the C# Environment.Exit() function
says "Use 0 (zero) to indicate that the process completed
successfully.". Windows cmd (the command that runs batch files) has a
special syntax in its "if" statement that tests the value of
%errorlevel; "if errorlevel 1" is used to test if the errorlevel is 1 or
greater, i.e., denotes failure.
VMS (officially OpenVMS) uses 1 to denote success, which is why exit(0)
in a VMS C program sets the system status to 1, not 0.
--
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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getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-01 03:48 +0000
Re: getFirstDayOfMonth() gazelle@shell.xmission.com (Kenny McCormack) - 2024-03-01 15:39 +0000
Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-01 17:12 +0100
Re: getFirstDayOfMonth() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-01 08:28 -0800
Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-01 17:33 +0100
Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-01 17:37 +0100
Re: getFirstDayOfMonth() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-01 10:34 -0800
Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-01 22:03 +0100
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-01 17:20 +0000
Re: getFirstDayOfMonth() scott@slp53.sl.home (Scott Lurndal) - 2024-03-01 16:47 +0000
Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-01 17:56 +0100
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-01 17:18 +0000
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-01 20:47 +0000
Re: getFirstDayOfMonth() scott@slp53.sl.home (Scott Lurndal) - 2024-03-01 21:38 +0000
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-01 21:50 +0000
Re: getFirstDayOfMonth() Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-03-03 09:52 -0800
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-02 00:00 +0000
Re: getFirstDayOfMonth() scott@slp53.sl.home (Scott Lurndal) - 2024-03-02 14:46 +0000
Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-02 16:41 +0100
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-02 19:59 +0000
Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-02 22:14 +0100
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-04 18:08 +0000
Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-05 03:03 +0100
Re: getFirstDayOfMonth() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-02 14:22 -0800
Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-03 15:43 +0100
Re: getFirstDayOfMonth() David Brown <david.brown@hesbynett.no> - 2024-03-03 18:45 +0100
Re: getFirstDayOfMonth() Kaz Kylheku <433-929-6894@kylheku.com> - 2024-03-03 18:42 +0000
Re: getFirstDayOfMonth() David Brown <david.brown@hesbynett.no> - 2024-03-04 09:49 +0100
Re: getFirstDayOfMonth() Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2024-03-04 11:31 +0000
Re: getFirstDayOfMonth() Richard Harnden <richard.nospam@gmail.invalid> - 2024-03-04 14:23 +0000
Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-04 17:27 +0100
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-04 17:34 +0000
Re: getFirstDayOfMonth() scott@slp53.sl.home (Scott Lurndal) - 2024-03-04 17:40 +0000
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-04 18:11 +0000
Re: getFirstDayOfMonth() scott@slp53.sl.home (Scott Lurndal) - 2024-03-04 18:26 +0000
Re: getFirstDayOfMonth() Kaz Kylheku <433-929-6894@kylheku.com> - 2024-03-04 18:30 +0000
Re: getFirstDayOfMonth() scott@slp53.sl.home (Scott Lurndal) - 2024-03-04 19:01 +0000
Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-05 03:09 +0100
Re: getFirstDayOfMonth() scott@slp53.sl.home (Scott Lurndal) - 2024-03-05 15:06 +0000
Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-05 02:56 +0100
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-05 02:49 +0000
Re: getFirstDayOfMonth() Mark Bourne <nntp.mbourne@spamgourmet.com> - 2024-03-06 20:40 +0000
Re: getFirstDayOfMonth() scott@slp53.sl.home (Scott Lurndal) - 2024-03-06 20:54 +0000
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-04 17:26 +0000
Re: getFirstDayOfMonth() scott@slp53.sl.home (Scott Lurndal) - 2024-03-04 17:34 +0000
Re: getFirstDayOfMonth() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-04 10:07 -0800
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-04 23:47 +0000
Re: getFirstDayOfMonth() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-04 16:10 -0800
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-05 00:12 +0000
[OT] Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-05 03:18 +0100
Re: [OT] Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-05 02:55 +0000
Re: getFirstDayOfMonth() scott@slp53.sl.home (Scott Lurndal) - 2024-03-05 15:03 +0000
Re: getFirstDayOfMonth() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-05 13:25 -0800
Re: getFirstDayOfMonth() Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2024-03-04 21:21 +0000
Re: getFirstDayOfMonth() Michael S <already5chosen@yahoo.com> - 2024-03-05 00:37 +0200
Re: getFirstDayOfMonth() Michael S <already5chosen@yahoo.com> - 2024-03-05 11:41 +0200
Re: getFirstDayOfMonth() Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-03-14 15:57 -0700
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-04 23:35 +0000
Re: getFirstDayOfMonth() Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-03-05 03:20 +0100
Re: getFirstDayOfMonth() James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-03-03 04:06 -0500
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-04 18:21 +0000
Re: getFirstDayOfMonth() James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-03-04 14:42 -0500
Re: getFirstDayOfMonth() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-04 14:50 -0800
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-05 00:40 +0000
Re: getFirstDayOfMonth() Kaz Kylheku <433-929-6894@kylheku.com> - 2024-03-05 01:27 +0000
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-05 02:40 +0000
Re: getFirstDayOfMonth() scott@slp53.sl.home (Scott Lurndal) - 2024-03-05 15:05 +0000
Re: getFirstDayOfMonth() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-04 17:39 -0800
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-05 02:43 +0000
Re: getFirstDayOfMonth() Michael S <already5chosen@yahoo.com> - 2024-03-05 01:08 +0200
Re: getFirstDayOfMonth() porkchop@invalid.foo (Mike Sanders) - 2024-03-05 00:18 +0000
Re: getFirstDayOfMonth() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-04 16:33 -0800
Re: getFirstDayOfMonth() scott@slp53.sl.home (Scott Lurndal) - 2024-03-03 15:24 +0000
Re: getFirstDayOfMonth() Michael S <already5chosen@yahoo.com> - 2024-03-03 20:20 +0200
Re: getFirstDayOfMonth() scott@slp53.sl.home (Scott Lurndal) - 2024-03-03 18:56 +0000
Re: getFirstDayOfMonth() Mark Bourne <nntp.mbourne@spamgourmet.com> - 2024-03-03 13:17 +0000
Re: getFirstDayOfMonth() jak <nospam@please.ty> - 2024-03-02 02:49 +0100
Re: getFirstDayOfMonth() Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-03-03 09:47 -0800
Re: getFirstDayOfMonth() jak <nospam@please.ty> - 2024-03-04 02:26 +0100
Re: getFirstDayOfMonth() Peter 'Shaggy' Haywood <phaywood@alphalink.com.au> - 2024-03-05 14:03 +1100
Re: getFirstDayOfMonth() bart <bc@freeuk.com> - 2024-03-05 13:19 +0000
Re: getFirstDayOfMonth() jak <nospam@please.ty> - 2024-03-13 05:40 +0100
Re: getFirstDayOfMonth() jak <nospam@please.ty> - 2024-03-13 06:01 +0100
Re: getFirstDayOfMonth() Spiros Bousbouras <spibou@gmail.com> - 2024-03-13 13:38 +0000
Re: getFirstDayOfMonth() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-13 08:47 -0700
Re: getFirstDayOfMonth() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-13 09:11 -0700
Re: getFirstDayOfMonth() Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-03-13 07:36 -0700
Re: getFirstDayOfMonth() Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-03-14 19:56 -0700
Re: getFirstDayOfMonth() Kaz Kylheku <433-929-6894@kylheku.com> - 2024-03-02 03:44 +0000
Re: getFirstDayOfMonth() Peter 'Shaggy' Haywood <phaywood@alphalink.com.au> - 2024-03-05 14:07 +1100
Re: getFirstDayOfMonth() gazelle@shell.xmission.com (Kenny McCormack) - 2024-03-05 13:30 +0000
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