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Groups > comp.lang.c > #100843
| From | David Brown <david.brown@hesbynett.no> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); |
| Date | 2017-01-02 02:00 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <o4c8l4$ups$1@dont-email.me> (permalink) |
| References | (17 earlier) <o4bhea$dku$1@dont-email.me> <373be98a-f121-4261-98f9-4fd36162d079@googlegroups.com> <87lguuo8b7.fsf@bsb.me.uk> <lna8baxz6s.fsf@kst-u.example.com> <87a8bao1sh.fsf@bsb.me.uk> |
On 01/01/17 23:25, Ben Bacarisse wrote: > Keith Thompson <kst-u@mib.org> writes: > >> Ben Bacarisse <ben.usenet@bsb.me.uk> writes: >>> bart4858@gmail.com writes: >>> >>>> On Sunday, 1 January 2017 18:24:44 UTC, David Brown wrote: >>>>> On 01/01/17 17:14, BartC wrote: >>>> >>>>>> So it seems to hinge on what the type of '-a' is intended to be. It >>>>>> doesn't look like it's _Bool. >>>>>> >>>>> >>>>> There are three steps to the process. First, there is the integer >>>>> promotion. >>>> >>>> Signed or unsigned? >>> >>> Signed. >>> >>>>> Then there is the conversion to the target type. >>>> >>>> Which is? >>> >>> I think David is referring to your rather odd phrase "it seems to hinge >>> on what the type of '-a' is intended to be". -a is if type int. If you >>> intend it to be of some other type there would be a conversion. >> >> If you intend -a to be of some type other than int, the compiler will >> quietly ignore your intent and treat it as an expression of type int. > > I meant "... there would need to be a conversion". I.e. if the intent > was to have an expression of type _Bool you would need a conversion to > _Bool. But since I'm trying to attribute meaning to a vague phrase I > did not write even that is a guess. > Your guess to my intent was perfectly reasonable. The possible conversion is when the "-a" (which is an "int") is stored in a variable, returned from a function, passed to a function, or in some other way turned into "what the type of '-a' is intended to be". I say "possible conversion", because if that "target type" is int, then no conversion is necessary.
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How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Veek M <vek.m1234@gmail.com> - 2016-12-30 11:35 +0530
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Veek M <vek.m1234@gmail.com> - 2016-12-30 11:39 +0530
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Barry Schwarz <schwarzb@dqel.com> - 2016-12-29 22:24 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); raltbos@xs4all.nl (Richard Bos) - 2017-01-01 10:56 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Tim Rentsch <txr@alumni.caltech.edu> - 2017-01-02 02:40 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); raltbos@xs4all.nl (Richard Bos) - 2017-01-03 21:09 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Tim Rentsch <txr@alumni.caltech.edu> - 2017-01-13 16:30 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Keith Thompson <kst-u@mib.org> - 2016-12-29 23:35 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); jt@toerring.de (Jens Thoms Toerring) - 2016-12-30 09:59 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2016-12-30 10:43 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-30 12:55 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2016-12-30 13:12 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-30 14:37 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2016-12-30 16:06 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Keith Thompson <kst-u@mib.org> - 2016-12-30 08:41 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2016-12-30 17:31 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-30 19:20 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2016-12-30 19:41 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); supercat@casperkitty.com - 2016-12-30 12:46 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-31 00:31 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); supercat@casperkitty.com - 2016-12-30 11:50 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); raltbos@xs4all.nl (Richard Bos) - 2017-01-01 10:54 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2017-01-01 11:35 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-01 12:00 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2017-01-01 12:16 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-01 13:03 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2017-01-01 14:52 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-01 15:42 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2017-01-01 16:14 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-01 17:18 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Keith Thompson <kst-u@mib.org> - 2017-01-01 13:09 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-01 19:24 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); bart4858@gmail.com - 2017-01-01 11:24 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-01 20:05 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Keith Thompson <kst-u@mib.org> - 2017-01-01 13:11 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-01 22:25 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-02 02:00 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-01-01 13:51 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2017-01-01 21:59 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-01-01 14:34 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-02 02:09 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-01-02 05:44 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-02 15:18 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2017-01-02 15:21 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-02 17:07 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-01-02 09:53 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-02 23:37 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-01-02 15:07 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ian Collins <ian-news@hotmail.com> - 2017-01-03 12:11 +1300
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-01-02 15:46 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-03 00:54 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-01-03 00:33 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-03 11:11 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2017-01-03 11:32 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-03 14:05 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2017-01-03 14:23 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-03 16:04 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-03 16:09 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-03 17:23 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); supercat@casperkitty.com - 2017-01-03 09:00 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-03 20:33 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); luser droog <luser.droog@gmail.com> - 2017-01-03 11:40 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); supercat@casperkitty.com - 2017-01-03 12:23 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); luser droog <luser.droog@gmail.com> - 2017-01-03 12:39 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); supercat@casperkitty.com - 2017-01-03 13:51 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Tim Rentsch <txr@alumni.caltech.edu> - 2017-01-15 22:58 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); supercat@casperkitty.com - 2017-01-16 10:24 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Tim Rentsch <txr@alumni.caltech.edu> - 2017-01-31 08:36 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Tim Rentsch <txr@alumni.caltech.edu> - 2017-01-14 00:53 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ian Collins <ian-news@hotmail.com> - 2017-01-03 13:13 +1300
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Keith Thompson <kst-u@mib.org> - 2017-01-02 15:51 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-03 00:51 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); jt@toerring.de (Jens Thoms Toerring) - 2017-01-02 23:32 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2017-01-02 23:46 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-03 01:00 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-01-03 00:42 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ian Collins <ian-news@hotmail.com> - 2017-01-03 21:47 +1300
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-01-03 01:31 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-03 10:34 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2017-01-03 11:19 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-03 16:19 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Thompson <dave.thompson2@verizon.net> - 2017-01-18 07:51 -0500
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Gareth Owen <gwowen@gmail.com> - 2017-01-18 21:30 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Richard Heathfield <rjh@cpax.org.uk> - 2017-01-18 21:45 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); raltbos@xs4all.nl (Richard Bos) - 2017-01-18 21:55 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Gareth Owen <gwowen@gmail.com> - 2017-01-19 22:25 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-02 00:08 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-02 02:05 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-01-01 09:45 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-01 19:20 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); supercat@casperkitty.com - 2017-01-01 15:26 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2017-01-01 23:48 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-02 00:25 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2017-01-01 16:44 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Philip Lantz <prl@canterey.us> - 2017-01-01 23:54 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Keith Thompson <kst-u@mib.org> - 2017-01-01 13:25 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-01-01 22:36 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); supercat@casperkitty.com - 2017-01-01 15:38 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); BartC <bc@freeuk.com> - 2016-12-30 13:42 +0000
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); David Brown <david.brown@hesbynett.no> - 2016-12-30 15:07 +0100
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); supercat@casperkitty.com - 2016-12-30 10:21 -0800
Re: How is he doing: int a[2] = { 1, 2 }; printf("%d\n", 2[a]); Veek M <vek.m1234@gmail.com> - 2016-12-31 07:37 +0530
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