extern question

[John Love-Jensen]

Hi Aseem,

> interestingly (or at least i think so :-) ), the code snippet that
> Trevis has given compiles and links using gcc BUT fails to link under
> g++ (2 times defined problem).

C++ has different rules than C about what constitutes a declaration versus a
definition.

(At least C89.  I'm not familiar with C99, which may have slightly different
rules.)

Sincerely,
--Eljay