Question

Which of the following operator can be used to overload when that function is declared as friend function?

(a) []

(b) ()

(c) ->

(d) |=

This question was posed to me in class test.

My doubt stems from Operator Overloading in division Source Files, Classes and Operator Overloading in C++ of C++

Answer 1

Correct answer is (d) |=

Easiest explanation - When an operator overlaoded function is declared as friend function then [], () and -> cannot be overloaded.