The GNU C++ Iostream Library - Files and Strings

Classes for Files and Strings

There are two very common special cases of input and output: using files, and using strings in memory.

libio defines four specialized classes for these cases:

ifstream

Methods for reading files.

ofstream

Methods for writing files.

istrstream

Methods for reading strings from memory.

ostrstream

Methods for writing strings in memory.

Files	Reading and writing files.
Strings	Reading and writing strings in memory.