3.3. Library vector Type

Image

A vector is a collection of objects, all of which have the same type. Every object in the collection has an associated index, which gives access to that object. A vector is often referred to as a container because it “contains” other objects. We’ll have much more to say about containers in Part II.

To use a vector, we must include the appropriate header. In our examples, we also assume that an appropriate using declaration is made:

#include <vector>using std::vector;

A vector is a class template. C++ has both class and function templates. Writing a template requires a fairly deep understanding of C++. Indeed, we won’t ...

Get C++ Primer, Fifth Edition now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.