Changing Function Access Mode in Derived Class

Question

Consider the following snippet:

struct Base
{
  virtual ~Base() {}

  virtual void Foo() const = 0; // Public
};

class Child : public Base
{
  virtual void          


        

Answer 1

It is perfectly legal C++. You are simply defining a new method in Child class.

Now does it do what you want it to do, that's an other question. I believe the access mode is not part of the method signature, which means that calling Base's Foo virtual method does eventually call Child's Foo method.

So here's the conclusion : it is legal c++ and it works the way you'd expect.

I am not taking into consideration the line child.Foo(); which can't work because there is no doubt it is trying to access Child's private Foo() method.