Question

I have not coded in c in a while, and I never was very good with pointers.

i have this beginning for main.

int main(int argc, char *argv[])

I need to be able to make a copy of the *argv[] in a global scope to allow multiple threads to access it, Is there a fast/easy way to do this?

Answer 1

One way to do it:

char **     prog_argv;
int         prog_argc;

int main(int argc, char *argv[])
{
    prog_argv = argv;
    prog_argc = argc;
    . . .
}

This declares a global pointer prog_argv that points to your argv[] array. Note that you also should use a global prog_argc to be on the safe side (although I think that argv[argc] is a null pointer (?)).

Of course, you need to declare prog_argv and prog_argc in a header file for the benefit of your other project source files.

Some operating system already do something like this for you. The names of the global variables are usually something like _argv or __argv.