C++ Primer Plus

The vector Template Class

The vector template class is similar to the string class in that it is a dynamic array. You can set the size of a vector object during runtime, and you can append new data to the end or insert new data in the middle. Basically, it’s an alternative to using new to create a dynamic array. Actually, the vector class does use new and delete to manage memory, but it does so automatically.

At this time we won’t venture very deeply into what it means to be a template class. Instead, we’ll look at a few basic practical matters. First, to use a vector object, you need to include the vector header file. Second, the vector identifier is part of the std namespace, so you can use a using directive, a using declaration, or std::vector ...