Re: static variable in C++

[mojahed]

> Question 1:
>   how can i initialize counter at (A) to 0?
>   i replaced (A) with
>       static int counter = 0;
>   
>   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:
> 

To initialize, just add the line

        int base::counter = 0;

after the class declaration. It will solve both problems.