I have a set of variables that I want to share across mulitple c++
files. I was using the extern method so far. Is there any other way to
do the same. The variables are not constants and I get the values
during run time.

awhan.iitk@gmail.com wrote:

extern is the way you do it normally, other than passing the variables as
parameters.

On May 6, 3:07 pm, "Jim Langston" rocketmail.com> wrote:

thanks for the reply. yes i should have also mentioned that i did not
want to pass the variables all the time. the reason i am looking for
alternate ways is after learning that memory for global variables is
reserved in the heap and a lot of global variables can create problems
for a program.

On 2008-05-06 06:26:32 -0400, "awhan.iitk@gmail.com"
gmail.com> said:

Not usually. They go in the same memory area as static data.

Pete Becker wrote:

On May 6, 5:50 pm, "Jim Langston" rocketmail.com> wrote:

Jim Langston wrote:

Sounds like a very bad C callback mechanism. It is a "C" callback mechanism
because otherwise it would have allowed generic functors and full compile
time type checking on the given functions and arguments. It is a "bad C
callback mechanism" because otherwise it would take in one form or another
an opaque argument (usually under the form of a "void*" argument) to
register along with the callback and that value is passed back to the
callback, the argument usually being used to transmit state from the code
registering the callback to the callback.

Yeah, organizing the data to be shared in a struct may help (it is usually
required with the "void*" passing method described above).