Friends

• Friends :There are certain special cases where a class would want access to other classes private attributes and methods in such scenario we can make use of the friends concept in classes.
• The Syntax “Definition deferred “means that you can refer to objects in your program which haven't yet been defined but will be later on in your code.
• For Example : If a class A declares itself as a friend to class B then class B will have access to all the private and protected attributes and methods of class A. 

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