How to compare 2 objects' private member?

Question

I have 2 class:

class A
{
    int aa;
};
class B
{
    int bb;
};
class C
{
    public:
        bool equal(A& av,B& bv)
        {
            return (av.aa==bv.bb);
        }
};

Of course, class C has compilation error cause of private members' access. Is there a way to implement that equal() member of class C ?

Answer 1

A good solution might be to provide getters in A and B classes. This way you keep everything encapsulated. e.g.

class A
{
    int aa;
    public:
     int GetAA()
     {
       return aa ;
     }

};