Question

What is bitset in C++?

(a) An array of bools consuming one bit per element

(b) Vector of bools

(c) C-like arrays of bool elements

(d) Template class

I have been asked this question at a job interview.

I'm obligated to ask this question of Bitset in chapter Class Hierarchies, Library & Containers of C++

Answer 1

Right choice is (a) An array of bools consuming one bit per element

To explain I would say: Bitset is a collection of bool variables with each element consuming only one bit. They are introduced for efficient use of memories.