function name printing

[Kumaravel]

Can I print the current function name in c? something like __LINE__?

for e.g

can I do

printf( " the current file is %s : function is : %s and line # is
:%d\n", __FILE__, __FUNC__, __LINE__);


thanks
kumaravel.

[Harti Brandt]

Re: function name printing

On Mon, 5 Jul 2004, Kumaravel wrote:

K>Can I print the current function name in c? something like __LINE__?
K>
K>for e.g
K>
K>can I do
K>
K>printf( " the current file is %s : function is : %s and line # is
K>:%d\n", __FILE__, __FUNC__, __LINE__);

__func__ is a a const char * and points to the current function name (for
C99). Gcc supported __FUNCTION__ and __PRETTY_FUNCTI ON__, but that's not
standard and has been deprecated.

harti

[jacob navia]

Re: function name printing


"Harti Brandt" <brandt@dlr.d e> a écrit dans le message de
news:2004070513 2112.M90892@bea gle.kn.op.dlr.d e...[color=blue]
> On Mon, 5 Jul 2004, Kumaravel wrote:
>
> K>Can I print the current function name in c? something like __LINE__?
> K>
> K>for e.g
> K>
> K>can I do
> K>
> K>printf( " the current file is %s : function is : %s and line # is
> K>:%d\n", __FILE__, __FUNC__, __LINE__);
>
> __func__ is a a const char * and points to the current function name (for
> C99). Gcc supported __FUNCTION__ and __PRETTY_FUNCTI ON__, but that's not
> standard and has been deprecated.
>
> harti[/color]

What was __PRETTY_FUNCTI ON__ ???

Weird name ... :-)

[Dominik Zanettin]

Re: function name printing

On Mon, 05 Jul 2004 04:20:18 -0700, Kumaravel wrote:
[color=blue]
> Can I print the current function name in c? something like __LINE__?
> for e.g[/color]

yes, in C99 you can use the predefined identifier __func__

regards
zhan

[Harti Brandt]

Re: function name printing

On Mon, 5 Jul 2004, jacob navia wrote:

jn>
jn>"Harti Brandt" <brandt@dlr.d e> a écrit dans le message de
jn>news:2004070 5132112.M90892@ beagle.kn.op.dl r.de...
jn>> On Mon, 5 Jul 2004, Kumaravel wrote:
jn>>
jn>> K>Can I print the current function name in c? something like __LINE__?
jn>> K>
jn>> K>for e.g
jn>> K>
jn>> K>can I do
jn>> K>
jn>> K>printf( " the current file is %s : function is : %s and line # is
jn>> K>:%d\n", __FILE__, __FUNC__, __LINE__);
jn>>
jn>> __func__ is a a const char * and points to the current function name (for
jn>> C99). Gcc supported __FUNCTION__ and __PRETTY_FUNCTI ON__, but that's not
jn>> standard and has been deprecated.
jn>>
jn>> harti
jn>
jn>What was __PRETTY_FUNCTI ON__ ???

That gives you the complete function signature (including name space and
classes in C++).

harti

[Martin Ambuhl]

Re: function name printing

Kumaravel wrote:
[color=blue]
> Can I print the current function name in c? something like __LINE__?
>
> for e.g
>
> can I do
>
> printf( " the current file is %s : function is : %s and line # is
> :%d\n", __FILE__, __FUNC__, __LINE__);[/color]

#include <stdio.h>

#define FTRACE printf( " the current file is %s, " \
"function is %s, and line # is %d\n", \
__FILE__, __func__, __LINE__)

void foo1(void)
{
FTRACE;
}

void foo2(void)
{
FTRACE;
}

int main(void)
{
foo1();
foo2();
return 0;
}

[output]

the current file is a.c, function is foo1, and line # is 9
the current file is a.c, function is foo2, and line # is 14

[Martin Ambuhl]

Re: function name printing

jacob navia wrote:
[color=blue]
> "Harti Brandt" <brandt@dlr.d e> a écrit dans le message de
> news:2004070513 2112.M90892@bea gle.kn.op.dlr.d e...[/color]
[color=blue][color=green]
>>__func__ is a a const char * and points to the current function name (for
>>C99). Gcc supported __FUNCTION__ and __PRETTY_FUNCTI ON__, but that's not
>>standard and has been deprecated.[/color][/color]
[color=blue]
> What was __PRETTY_FUNCTI ON__ ???
>
> Weird name ... :-)[/color]

Doubly off-topic: particular compiler (gcc) and wrong language (not C).
Used to print the function name as it appears in the source
(__FUNCTION__) or "in a language-specific way" (__PRETTY_FUNCT ION__).
For C++, for example, __PRETTY_FUNCTI ON__ yields scoping information.

[Old Wolf]

Re: function name printing

Harti Brandt <brandt@dlr.d e> wrote:[color=blue]
> On Mon, 5 Jul 2004, Kumaravel wrote:
>
> K>Can I print the current function name in c? something like __LINE__?
> K>
> K>for e.g
> K>
> K>can I do
> K>
> K>printf( " the current file is %s : function is : %s and line # is
> K>:%d\n", __FILE__, __FUNC__, __LINE__);
>
> __func__ is a a const char * and points to the current function name (for
> C99).[/color]

Actually it is a const char [] containing the current function name
(so you can do "sizeof" on it, and take its address, etc.)