Implementing abstract class members in a parent class

Question

Is it possible to implement an abstract base class with members inherited from another parent class in C++?

It works in C#, so I tried doing it in C

Answer 1

Try to use virtual inheritance

class ITalk
{
public:
  virtual void SayHi() = 0;
};

class Parent: virtual ITalk
{
public:
   void SayHi();
};

class Child : public Parent, public virtual ITalk
{
};

void Parent::SayHi()
{
    std::printf("Hi\n");
}