Good $daytime,
> Date: Tue, 19 Jan 1999 15:36:16 -0500
> From: Yasushi Shoji <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Subject: static variable in C++
> trying to make a class with a static variable so that all objects
> instantiated for that class can share one variable.
> # hope i'm on the right road...
> Question 1:
> how can i initialize counter at (A) to 0?
> i replaced (A) with
> static int counter = 0;
Try this:
class base {
...
}
int base::counter = 0;
int
main()
{
...
> and compiler said:
> "ANSI C++ forbids in-class initialization
> of non-const static member `counter'"
> Question 2;
> it seems that linker is not able to link object files from
> the source code:
> bash$ g++ -Wall static.cpp
> /tmp/ccPYx1jJ.o: In function `base::get_counter(void)':
> /tmp/ccPYx1jJ.o(.base::gnu.linkonce.t.get_counter(void)+0x8): undefined reference to
>`base::counter'
The same answer. You _declare_ a static variable but then forgot to
_define_ it. Initial value is optional, but definition itself isn't.
C++-go o muzukashiku nai.
Regards,
Willy.
--
"No easy hope or lies | Vitaly "Willy the Pooh" Fedrushkov
Shall bring us to our goal, | Information Technology Division
But iron sacrifice | Chelyabinsk State University
Of Body, Will and Soul." | mailto:[EMAIL PROTECTED] +7 3512 156770
R.Kipling | http://www.csu.ac.ru/~willy VVF1-RIPE
