Question

Which of the header file is used for array type manipulation?

(a) <array>

(b) <type_traits>

(c) <iostream>

(d) std namespace

I had been asked this question in final exam.

This intriguing question originated from Array Type Manipulation topic in division Class Hierarchies, Library & Containers of C++

Answer 1

Right answer is (d) std namespace

Best explanation: Array type manipulation functions are declared incside the namespace std so you can use namespace std to use these functions.