Word Matching Exercise

Operator Overloading

Friend Class

Friend Function

Rule of Three

	refers to the copy constructor, the = assignment operator, and the destructor. If they are not defined explicitly, all three are created by the compiler automatically. You should customize them if the class contains a pointer data field. If you have to customize one of the three, you should customize the other two as well.
	is to define functions for operators.
	is a class defined as a friend of a class using the friend keyword and can access private members of this class.
	is a function defined as a friend of a class using the friend keyword and can access private members of this class.