There's not an easy way that is platform agnostic to determine the argument count. You can do it yourself as a convention:
void MyFunc(int argcount, ...);
Then call it with the explicit argument count, via:
int a=1, b=2, c=3; MyFunc(3, a, b, c);
I recommend that variable arguments be passed in as a std::vector<> or std::map<> or std::set<> or whatever kind of container is appropriate. Or better yet, as generic begin() and end() iterators to the aforementioned containers. By "generic" I mean using templates.
HTH, --Eljay
