C++ Programming: A Practical Approach

Class Features 147

{

float a=square(52);

cout<<a;

}

Output

49

(x) friend is a keyword.

(xi) Any number of classes can declare a function as friend.

(xii) friend function is not a member function of any class.

(xiii) friend funciton can be declared public, protected or private.

(xiv) friend function has its parameters as object of a class for which it is declared as a

friend.

(xv) A class can declare any number of classes as a friend of that class.

(xvi) friend function breaks encapsulation as it gives access to private data members and

methods of a class.

(xvii) friend function cannot be static because static function is a member function ...