Specifying an in-class using-declaration targeting different functions with the same name

Question

When using a using-declaration to expose base class' methods, how can I go about exposing methods with the same name but different parameters?

class Base
{
protected:
    void f();
    void f(int);
};

class Derived: public Base
{
    using Base::f; // which is exposed, and how can I manually specify?
};

Answer 1

In this way, all method in the base class will be exposed and if you want to use just a specific method in derived class you need to use forwarding function

class Base{
  protected:
  void f();
  void f(int);
};

class Derived: public Base
{
 public:
  void f()    //forwarding function
  {
    Base::f();
  }
};

for more explanation of this method you can read Scott Meyers's first book, an Item dedicated to Avoid‬‬ ‫‪hiding‬‬ ‫‪inherited‬‬ ‫‪names‬‬(link to this item)