The general syntax of the function prototype to overload the stream extraction operator for a class is ____.
A) istream& operator(istream&, className&);
B) const istream& operator(istream&, className&);
C) friend operator(istream&, className&);
D) friend istream& operator(istream&, className&);

Question

The general syntax of the function prototype to overload the stream extraction operator >> for a class is ____.
A) istream& operator>>(istream&, className&);
B) const istream& operator>>(istream&, className&);
C) friend operator>>(istream&, className&);
D) friend istream& operator>>(istream&, className&);

Quizplus · Accepted Answer

The correct syntax for overloading the stream extraction operator ">>" for a class is to declare the function as a friend function with the return type of istream& and two arguments: the first argument is the input stream object by reference, and the second argument is the object of the class on which the operation is performed, also by reference. Hence, the best choice is D as it satisfies all the above conditions.

The General Syntax of the Function Prototype to Overload the Stream