#include
does? Are you asking what a library is?
iostream is three things. 1. It's a header that you can add to the top of your files to allow you to use the cin, cout, cerr, and clog global objects. 2. It's a class in the <istream> header that allows you to both read and write from a stream. I'm pretty sure this class was meant to be derived from and can't be used normally. 3. It's a section of the standard C++ library that is designed to handle streams, whether they be to/from a file, to/from somewhere in memory, to/from the three standard input/output streams, or somewhere else, -Albatross |