Re: Newbie inheritance question

Hi all, I'm getting confused again, so someone please take pity and
explain. I've got something like this:

class Base
{
   void do_work(string&, string&, int&);

};

class Derived : public Base
{
   void do_work(char*, char*, int&);

};

int main()
{
   Derived MyObj;
   string sString, bString;

   MyObj.do_work(aString, bString, 123);

}

This gives a compile-time error that basically says

no matching function for call to `Derived::do_work(string&, string&,
int)'
candidates are: void Derived::do_work(char*, char*, int&)

Why does the compiler not use the matching function from the Base
class? I can work around it by doing something like this:

int main()
{
   Base* ptr = new Derived();
   string aString, bString;

   ptr->do_work(aString, bString, 123);
   delete ptr;

}

but that seems to sort of defeat the purpose of inheritance, to my
newbie eyes at least.