CS202 7- ‹#›
Friends
•Remember that with data hiding and encapsulation, we force clients to manipulate private data through public member functions. By declaring friends, we allow non-member functions or member functions of other classes access to private data.
•A class can declare another class to be a friend.
•When we do this, the first class gives all member functions of the second class permission to access
all of its protected
and private information (not the other way around; a class cannot declare itself a friend of
another
class).