Very Computer

by **predat** » Mon, 19 Mar 2001 07:10:35

I don't understand what is difference between static and normal function?
eg :
static int gg(){
printf("Hello world\n");

Quote:}

int gg1(){
printf("Hello world\n");

Quote:}

--
signoff predator

by **Erik Max Franci** » Mon, 19 Mar 2001 08:35:16

> I don't understand what is difference between static and normal
> function?

At module level, a static function is local to that module (e.g., source
file). A non-static function is global.

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by **Jens.Toerr..** » Mon, 19 Mar 2001 08:42:28

> I don't understand what is difference between static and normal function?
> eg :
> static int gg(){
> printf("Hello world\n");
> }
> int gg1(){
> printf("Hello world\n");
> }

Its local to the current file, i.e. if you have a project with more than
one file you can have a function with the same name (as long as they are
declared static) in each file without the linker getting upset.

by **predat** » Mon, 19 Mar 2001 18:25:55

>Its local to the current file, i.e. if you have a project with more than
>one file you can have a function with the same name (as long as they are
>declared static) in each file without the linker getting upset.

Thank you both , I now understand why I should write modules with static
or without it :o)

--
signoff predator

by **Fletcher Glen** » Wed, 21 Mar 2001 02:03:53

Applied to C++ classes, a normal function is only accessable
from an instance of the class that contains it. A static function
is accessable from anywhere, but it cannot access the variables
specific to an instance of a class. An example of a static
method would be a signal handler. This is useful, because the
void * argument could be a pointer to a specific instance
of a class.

--
Fletcher Glenn
to reply remove NOSPAM from my reply address

Quote:
> I don't understand what is difference between static and normal function?
> eg :
> static int gg(){
> printf("Hello world\n");
> }

> int gg1(){
> printf("Hello world\n");
> }

> --
> signoff predator

by **Erik Max Franci** » Wed, 21 Mar 2001 02:08:39

> Applied to C++ classes, a normal function is only accessable
> from an instance of the class that contains it. A static function
> is accessable from anywhere, but it cannot access the variables
> specific to an instance of a class. An example of a static
> method would be a signal handler. This is useful, because the
> void * argument could be a pointer to a specific instance
> of a class.

Static member functions still don't have C linkage, unfortunately, so
for a signal handler you'd need a separate extern "C" function wrapping
around the static member function.

But it was pretty clear the original poster wasn't talking about this
C++ meaning of static, anyway.

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