What do you understand by friend-functions? How are they used?
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Answer / Rahul Harshawardhan
"Friend functions are non-member functions that have access to private and protected members of a class in C++. They are defined outside the class definition and can be used for performing operations on objects without being a member of the class. Friend functions are useful when it is necessary to write a function that requires direct access to the private or protected members of a class, but doesn't need to be associated with any specific object.".
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