Friendship and nested classes

[Juha Nieminen]

Assume we have this kind of class hierarchy:

class A
{
class B;
};

class C
{
friend A;
};

Can B access the privates of C? What are the rules of friendship scope?

 

[Saeed Amrollahi]

  Assume we have this kind of class hierarchy:

class A
{
    class B;

};

class C
{
    friend A;

};

  Can B access the privates of C? What are the rules of friendship scope?

I think the best practice is try the code in a typical C++
environment. Also see the following link:
http://parashift.com/c++-faq-lite/friends.html

Regards,
Saeed Amrollahi

 

[Martin York]

  Assume we have this kind of class hierarchy:

class A
{
    class B;

};

class C
{
    friend A;

};

  Can B access the privates of C? What are the rules of friendship scope?

No.

Just because you are my friend: (And I let you drive my car)

* I don't necessarily trust your kids. (Especially with my car)
* I don't necessarily trust your friends.(Especially with my car)
* You don't need to trust me. (With your Ferrari)