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| From | Ben Bacarisse <ben.usenet@bsb.me.uk> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: what is data type 'int *' ? |
| Date | 2015-02-05 00:09 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <87vbjhcj84.fsf@bsb.me.uk> (permalink) |
| References | <mauauc$p5v$1@dont-email.me> |
bilsch <king621@comcast.net> writes:
> A Sams book on C programming has a program that demonstrates how pointers
> work, similar to the listing below. I'm using Ubuntu and GNU gcc
> compiler. For the last two printf lines the gcc compiler gives the error:
>
> expects argument of type ‘int’, but argument 2 has type ‘int *’
>
> Presumably, the compiler used with the book does not produce this
> error.
Or the author ignored it!
> My question is what format specifier (%i) should I use for
> type 'int *' ? I dont know of a format specifier for type ‘int *’.
There's no specifier for int * but there is one for void *: %p. Because
of the way functions like printf with variable numbers of arguments
work, you need to cast the pointer to void * if it is not already of
that type:
printf("\nthe address of var is %p\n", (void *)&var);
> Also, if the compiler used with the book doesnt produce the error, why is
> gcc so finicky.
gcc has a history of being cross-platform. It is stronger than some
others at pointing out things that are wrong but might just happen to
work on one system or another. It's a good thing. You sound as if you
think it's the wrong way to go.
<snip>
--
Ben.
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what is data type 'int *' ? bilsch <king621@comcast.net> - 2015-02-04 23:45 +0000
Re: what is data type 'int *' ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-02-05 00:09 +0000
Re: what is data type 'int *' ? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-02-05 01:24 +0000
Re: what is data type 'int *' ? James Kuyper <jameskuyper@verizon.net> - 2015-02-05 07:00 -0500
Re: what is data type 'int *' ? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-02-05 14:09 +0000
Re: what is data type 'int *' ? Robert Wessel <robertwessel2@yahoo.com> - 2015-02-05 13:08 -0600
Re: what is data type 'int *' ? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-02-06 00:33 +0000
Re: what is data type 'int *' ? Robert Wessel <robertwessel2@yahoo.com> - 2015-02-05 19:30 -0600
Re: what is data type 'int *' ? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-02-06 10:17 +0000
Re: what is data type 'int *' ? Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-02-07 13:21 -0800
Re: what is data type 'int *' ? Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2015-02-04 19:47 -0500
Re: what is data type 'int *' ? bilsch <king621@comcast.net> - 2015-02-05 09:40 +0000
Re: what is data type 'int *' ? Richard Heathfield <rjh@cpax.org.uk> - 2015-02-05 09:51 +0000
Re: what is data type 'int *' ? Keith Thompson <kst-u@mib.org> - 2015-02-05 08:04 -0800
Re: what is data type 'int *' ? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-02-06 00:42 +0000
Re: what is data type 'int *' ? Keith Thompson <kst-u@mib.org> - 2015-02-05 19:09 -0800
Re: what is data type 'int *' ? Kaz Kylheku <kaz@kylheku.com> - 2015-02-05 01:17 +0000
Re: what is data type 'int *' ? Richard Heathfield <rjh@cpax.org.uk> - 2015-02-05 03:04 +0000
Re: what is data type 'int *' ? Richard Heathfield <rjh@cpax.org.uk> - 2015-02-05 03:06 +0000
Re: what is data type 'int *' ? Richard Heathfield <rjh@cpax.org.uk> - 2015-02-05 03:06 +0000
Re: what is data type 'int *' ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-02-05 10:20 +0000
Re: what is data type 'int *' ? Richard Heathfield <rjh@cpax.org.uk> - 2015-02-05 10:47 +0000
Re: what is data type 'int *' ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-02-05 12:18 +0000
Re: what is data type 'int *' ? Richard Heathfield <rjh@cpax.org.uk> - 2015-02-05 12:40 +0000
Re: what is data type 'int *' ? Keith Thompson <kst-u@mib.org> - 2015-02-05 08:24 -0800
Re: what is data type 'int *' ? James Kuyper <jameskuyper@verizon.net> - 2015-02-05 11:42 -0500
Re: what is data type 'int *' ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-02-05 17:13 +0000
Re: what is data type 'int *' ? Keith Thompson <kst-u@mib.org> - 2015-02-05 08:43 -0800
Re: what is data type 'int *' ? bilsch <king621@comcast.net> - 2015-02-05 09:45 +0000
THANKS FOR THE INFO bilsch <king621@comcast.net> - 2015-02-05 09:47 +0000
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