How can I override an C++ standard-library class function?

Question

How can I override a C++ standard-library class function? In my application, I use ofstream objects in many different places of code. And now I want to open files i

Answer 1

#include 
#include 

class gstream: public std::ofstream
{

void open(const std::string& filename, ios_base::openmode mode,int stuff)
        {
                //put stuff here

        }
};

int main() {

        gstream test;
//io stuff
return 0;
}

seems to work here.