Question

What types may the STL stack be based on? By default, what type is an STL stack based on?

Short answer

Answer: The STL stack can be based on two types of containers: std::list and std::deque. The default type for the STL stack is std::deque.

Step-by-step solution

Understanding the STL stack

The STL stack is a container adapter that provides a Last-In-First-Out (LIFO) data structure. It is based on either list or deque (default) as the underlying container.

Listing the types the STL stack can be based on

The STL stack can be based on two types of containers: 1. std::list 2. std::deque

Mentioning the default type for the STL stack

By default, the STL stack is based on the std::deque container type.