Question

Which of the following function is used to get the actual number of elements stored in vector?

(a) v.size()

(b) v.capacity()

(c) v.max_size()

(d) v.no_of_elements()

The question was asked by my college director while I was bunking the class.

Origin of the question is seq_con Vector Class topic in portion Class Hierarchies, Library & Containers of C++

Answer 1

The correct answer is (a) v.size()

Explanation: To get the number of elements stored in the vector v we use the function v.size(). It returns how many elements are currently in the vector excluding the void places.