Difference between friend class and friend function

Question

Accepted Answer

Friend class allows access to private and protected members of another class, while friend function allows access to private and protected members of a class.

Friend class is declared using the 'friend' keyword followed by the class name.
Friend function is declared using the 'friend' keyword followed by the function prototype.
Friend class can access private and protected members of the class it is declared as a friend of.
Friend function can access private and protected members of the class it is declared as a friend of.
Friend class and friend function declarations are not reciprocal, meaning if class A is a friend of class B, it does not imply that class B is a friend of class A.

Accepted Answer

A friend function is used for accessing the non public member of a class. A class can allow non-member function and other classes to access its own private data by making them friend A Friend class has full access of private data members of another class without being member of that class.

Difference between friend class and friend function

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