Question

Which of the following header file is needed to use vectors in your program?

(a) <array>

(b) <vector>

(c) <containers>

(d) <stdio>

I have been asked this question by my college professor while I was bunking the class.

I want to ask this question from seq_con Vector Class in chapter Class Hierarchies, Library & Containers of C++

Answer 1

The correct option is (b) <vector>

Explanation: Header file <vector> contains all the implementation of vector methods, hence we need to include this header file.