23.3 The Stack and Queue Adapters

Linear data structures that support LIFO or FIFO access (sect. 16.3)
Not actually containers, but adapters (wrappers) built on containers
Found in <stack> and <queue>
Adapter: a class that uses another container to maintain elements, but changes the interface
Operations for the adapter are ultimately passed to the underlying class
Slightly simplified implementation of stack (next slide)