Function main

cpp_11/003_class_functor.cpp:14–22

};

int main(int argc, char *argv[])
{
    //===functor
    Tax high(0.40, 30000);
    Tax middle(0.25, 20000);

    cout << "tax over 3w: " << high(37500) << endl;
    cout << "tax over 2w: " << middle(27500) << endl;
}