Question

Here to show you what I mean exactly it hard to describe without code:

class Object
{ 
      // attributes..
};

class Attribute
{
    public:
    void myfunc(); 
};

class Character: public Object, public Attribute
{ 

};

void main()
{
    Object* ch = new Character;
    // How can I call the myfunc() from Attribute
    // tried static_cast<Attribute*>(ch);
}

I only just have a Object Class pointer and i doesn’t know
if it is a Character Object or another object which inherit from the
Attribute class, what i know is that the class inherit from Attribute Class.

Answer 1

Cross casting can only be done by dynamic_cast.

Object * o = new Character;
Attribute * a = dynamic_cast<Attribute*>(o);

if (!a) throw_a_fit();

a->myfunc();

However, for this to work you must have polymorphic base classes (they must have at least one virtual function).