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class A1 { public: friend class B; }
class A2 { private: friend class B; }
Any difference?
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The friend function can be a member of another class or a function that is outside the scope of the class. A friend function can be declared in the private or public part of a class without changing its meaning. Friend functions are not called using objects of the class because they are not within the class's scope.
Friends aren't in the class's scope, and they aren't called using the member-selection operators (. and ->) unless they're members of another class. A friend function is declared by the class that is granting access. The friend declaration can be placed anywhere in the class declaration.
A friend function in C++ is defined as a function that can access private, protected and public members of a class. The friend function is declared using the friend keyword inside the body of the class.
Friend class and function in C++ A friend class can access both private and protected members of the class in which it has been declared as friend.
No, access specificators have no effect on friend declaration.
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