Question

write one condition for using a friend function​

Answer 1

Answer:

A friend function is not invoked using the class object as it is not in the scope of the class. ... It needs to make use of a class object and then access the members using the dot operator. A friend function can be a global function or a member of another class

Answer 2

Answer:

A friend function is not invoked using the class object as it is not in the scope of the class. ... It needs to make use of a class object and then access the members using the dot operator. A friend function can be a global function or a member of another class

hope this helps....