The concept of encapsulation and
data hiding indicate that nonmember functions should not be able to access an objectís private and protected data.
The policy is if you are not a member, you canít get
it. But there is a certain situation wherein you need to share your private
or protected data with nonmembers. ĎFriendsí come here as a rescue.
A friend class is a class whose member functions can access another classí
private and protected members. Ex.:
cout << "Enter the values : ";
cin >> x >> y;
friend float avg(ABC A);
float avg(ABC A)
return float(A.x + A.y)/2.0;
av = avg(obj);
cout << "Average = " << av;
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