Accessing protected members in a derived class

Question

I ran into an error yesterday and, while it\'s easy to get around, I wanted to make sure that I\'m understanding C++ right.

I have a base class with a protected memb

Answer 1

You can try with static_cast< const Derived*>(pBase)->Base::protected_member ...

class Base
{
  protected:
    int b;

  public:
    ...
};

class Derived : public Base
{
  protected:
    int d;

  public:
    void DoSomething(const Base& that)
    {
      b += static_cast(&that)->Base::b;
      d=0;
    }
    void DoSomething(const Base* that)
    {
      b += static_cast(that)->Base::b;
      d=0;
    }
};