What is a friend function? (3)
What is the difference between a friend function of a class and a member function of a class? (3)
Which of the following operators must be overloaded as a friend function of a class and why? (3)
a. * b. && c. ++ d. >> e. []
Suppose that * is overloaded as a member of the class temp. What is restriction on the far left operand of * when applying on objects of type temp? (3)