Question

I have class C and it is inheriting from Class A and Class B.
Is it possible for class A to access Class B function( eg fun1() ) using this inheritance. A and B are both independent class and fun1() is only in class B.

Answer 1

Not strictly through inheritance. Although A and B are parents of C, A and B have no relationship and no way to access eachother.

It is possible through inheritance and polimorphism, then class A have a virtual method that C implements calling the function in B, like this:

class A {
public:
  b get_b() { return do_get_b(); }
private:
  virtual do_get_b() = 0;
};

class B {
public:
  b some_b;
};   

class C : public A, public B {
private:
  virtual do_get_b() {return some_b;}
}