Question

What is the correct function prototype of () operator overloading?

(a) return_type operator(arguments)();

(b) return_type operator(arguments);

(c) return_type operator()(arguments);

(d) return_type operator(Class_name)(arguments);

I have been asked this question in quiz.

I need to ask this question from Functors topic in chapter Algorithms, Objects & Iterators in C++ of C++

Answer 1

Right option is (c) return_type operator()(arguments);

The explanation: The correct syntax of overloading a () operator in a class is as follows:

return_type operator()(arguments){}