Hi,
I am pretty sure this is not possible, but maybe somehow it is.
Given a variable, can I tell what type it is at runtime?
Michael
26  2430 
On Sat, 13 Nov 2004, Michael McGarry wrote:
Given a variable, can I tell what type it is at runtime?
Sure. Just take the type it was at compile time, and remember it.
For example,
int main(void)
{
int i;
printf("i is of type %s.\n", "int");
return 0;
}
If you have some other idea in mind, you're going to have to be more
explicit.
-Arthur
On Sun, 14 Nov 2004 04:28:36 UTC, Michael McGarry
<mm******@nospa m.org> wrote: Hi,
I am pretty sure this is not possible, but maybe somehow it is.
Given a variable, can I tell what type it is at runtime?
No. Your compiler replaces names with addresses. Nothing as the human
writing the souerces needs names for variables, so the compiler
eliminates them.
--
Tschau/Bye
Herbert
Visit http://www.ecomstation.de the home of german eComStation
On Sat, 13 Nov 2004 21:28:36 -0700, in comp.lang.c , Michael McGarry
<mm******@nospa m.org> wrote: Hi,
I am pretty sure this is not possible, but maybe somehow it is.
Given a variable, can I tell what type it is at runtime?
You're right - there's no typeof() operator or function in C. By runtime,
all variables are replaced by addresses etc and there's no type information
carted around with them.
--
Mark McIntyre
CLC FAQ <http://www.eskimo.com/~scs/C-faq/top.html>
CLC readme: <http://www.ungerhu.com/jxh/clc.welcome.txt >
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Michael McGarry <mm******@nospa m.org> wrote in message news:<T9Bld.587 79$EZ.51910@oke pread07>... Hi,
I am pretty sure this is not possible, but maybe somehow it is.
Given a variable, can I tell what type it is at runtime?
Michael
By size, maybe ?...
In article <T9Bld.58779$EZ .51910@okepread 07>,
Michael McGarry <mm******@nospa m.org> wrote: Hi,
I am pretty sure this is not possible, but maybe somehow it is.
Given a variable, can I tell what type it is at runtime?
Some compilers, like gcc, provide a construct named
typeof() which produces the object type. Unfortunately,
(and inexplicably) typeof() has not found its way into
the C standard.
--
Rouben Rostamian
Rouben Rostamian wrote: In article <T9Bld.58779$EZ .51910@okepread 07>,
Michael McGarry <mm******@nospa m.org> wrote:
Hi,
I am pretty sure this is not possible, but maybe somehow it is.
Given a variable, can I tell what type it is at runtime?
Some compilers, like gcc, provide a construct named
typeof() which produces the object type. Unfortunately,
(and inexplicably) typeof() has not found its way into
the C standard.
Is there really a typeof()?? Which standard library is it in?
Michael
Michael McGarry wrote: Rouben Rostamian wrote:
In article <T9Bld.58779$EZ .51910@okepread 07>,
Michael McGarry <mm******@nospa m.org> wrote:
Hi,
I am pretty sure this is not possible, but maybe somehow it is.
Given a variable, can I tell what type it is at runtime?
Some compilers, like gcc, provide a construct named
typeof() which produces the object type. Unfortunately,
(and inexplicably) typeof() has not found its way into
the C standard.
Is there really a typeof()?? Which standard library is it in?
Michael
No typeof in C.
--
Joe Wright mailto:jo****** **@comcast.net
"Everything should be made as simple as possible, but not simpler."
--- Albert Einstein ---
On Sun, 14 Nov 2004 21:49:14 -0500, Joe Wright wrote: Michael McGarry wrote: Rouben Rostamian wrote:
In article <T9Bld.58779$EZ .51910@okepread 07>,
Michael McGarry <mm******@nospa m.org> wrote:
Hi,
I am pretty sure this is not possible, but maybe somehow it is.
Given a variable, can I tell what type it is at runtime?
Some compilers, like gcc, provide a construct named
typeof() which produces the object type. Unfortunately,
(and inexplicably) typeof() has not found its way into
the C standard.
Is there really a typeof()?? Which standard library is it in?
Michael
No typeof in C.
I don't understand the confusion/sarcasm here. Rouben clearly stated it
was not standard. It is however a useful feature available to many
developers and there is no harm voicing the fact that it exists (along
with the fact that it is not standard as Rouben did) when there is no
standard solution and the information may help the OP.
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