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Groups > comp.lang.c > #150327
| From | Keith Thompson <Keith.S.Thompson+u@gmail.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: clarification about enums in C |
| Date | 2020-02-28 01:30 -0800 |
| Organization | None to speak of |
| Message-ID | <875zfrt5xl.fsf@nosuchdomain.example.com> (permalink) |
| References | (1 earlier) <r35hab$ts9$1@dont-email.me> <5c585469-72c8-42f8-9e74-848f160db602@googlegroups.com> <aafdcd8f-ba2e-4237-9df9-c9808a34b78f@googlegroups.com> <87o8tkw8j2.fsf@bsb.me.uk> <r3a6b3$u09$1@dont-email.me> |
James Kuyper <jameskuyper@alumni.caltech.edu> writes:
> On 2/27/20 6:53 AM, Ben Bacarisse wrote:
[...]
>> #define PT(e) printf(#e" is %ssigned\n", (e)-(e) - 1 >= 0 ? "un" : "")
>>
>> int main(void)
>> {
>> enum en_t {
>> A = 1,
>> B = -1,
>> C = (unsigned)-1,
>
> Of course, providing (unsigned)-1 as the value for C is also a
> constraint violation.
Unless INT_MAX == UINT_MAX (possible if unsigned int has at least one
padding bit). There might not be an existing implementation where this
is the case.
--
Keith Thompson (The_Other_Keith) Keith.S.Thompson+u@gmail.com
Working, but not speaking, for Philips Healthcare
void Void(void) { Void(); } /* The recursive call of the void */
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clarification about enums in C Thiago Adams <thiago.adams@gmail.com> - 2020-02-25 15:38 -0800
Re: clarification about enums in C luser droog <luser.droog@gmail.com> - 2020-02-25 19:19 -0800
Re: clarification about enums in C James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-25 21:17 -0800
Re: clarification about enums in C Thiago Adams <thiago.adams@gmail.com> - 2020-02-27 04:01 -0800
Re: clarification about enums in C David Brown <david.brown@hesbynett.no> - 2020-02-26 11:29 +0100
Re: clarification about enums in C already5chosen@yahoo.com - 2020-02-26 14:05 -0800
Re: clarification about enums in C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-02-26 23:03 +0000
Re: clarification about enums in C already5chosen@yahoo.com - 2020-02-26 23:29 -0800
Re: clarification about enums in C already5chosen@yahoo.com - 2020-02-27 01:42 -0800
Re: clarification about enums in C David Brown <david.brown@hesbynett.no> - 2020-02-27 11:02 +0100
Re: clarification about enums in C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-02-27 06:37 -0800
Re: clarification about enums in C David Brown <david.brown@hesbynett.no> - 2020-02-27 16:18 +0100
Re: clarification about enums in C James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-27 23:24 -0500
Re: clarification about enums in C David Brown <david.brown@hesbynett.no> - 2020-02-27 09:50 +0100
Re: clarification about enums in C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-02-27 06:33 -0800
Re: clarification about enums in C already5chosen@yahoo.com - 2020-02-27 06:53 -0800
Re: clarification about enums in C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-02-27 15:05 +0000
Re: clarification about enums in C David Brown <david.brown@hesbynett.no> - 2020-02-27 16:24 +0100
Re: clarification about enums in C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-02-28 01:27 -0800
Re: clarification about enums in C already5chosen@yahoo.com - 2020-02-27 01:29 -0800
Re: clarification about enums in C David Brown <david.brown@hesbynett.no> - 2020-02-27 11:12 +0100
Re: clarification about enums in C already5chosen@yahoo.com - 2020-02-27 03:09 -0800
Re: clarification about enums in C David Brown <david.brown@hesbynett.no> - 2020-02-27 14:33 +0100
Re: clarification about enums in C already5chosen@yahoo.com - 2020-02-27 05:44 -0800
Re: clarification about enums in C David Brown <david.brown@hesbynett.no> - 2020-02-27 14:57 +0100
Re: clarification about enums in C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-02-27 11:53 +0000
Re: clarification about enums in C James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-02-27 23:52 -0500
Re: clarification about enums in C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-02-28 01:30 -0800
Re: clarification about enums in C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-02-26 14:09 +0000
Re: clarification about enums in C Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-02-26 09:47 -0800
Re: clarification about enums in C Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-02-26 21:04 +0000
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