The friend keyword in C++ allows ... of your classes. Using a friend function to overload an operator is convenient because it gives you direct access to the internal members of the classes you’re ...

Use those boxes to test and deepen your understanding of C++. C++ allows a programmer to overload operators ... normally use '+' in a function name.) For operators, the receiver is the left hand ...

then we can provide a member function as well as friend function... => If the first parameter of that operator is a primitive data type then we must need to provide friend function because it's not ...