OOPS - [C++ Important Classes for File Operation]

♠ Posted by Unknown in CPP Language at 04:15

Important Classes for File Operation 

The I/O system of C++ contains a set of classes that defines the file handling methods. These include ifstream, ofstream and fstream.
These classes are derived from fstreambase and from the corresponding iostream class.

filebuf	Its purpose is to set the file buffers to read and wirte. Contains Openprot constant used in the open() of file stream classes. Also contain close() and open() as members.
fstreambase	Serves as a base for fstream, ifstream and ofstream class. Contains open() and close() functions.
ifstream	Provides input operations. Contains open() with default input mode. inherits the functions get(), getline(), read(), seekg() and tellg() functions from istream.
ofstream	Provides output operations. Contains open() with default output mode. inherits put(), seekp(), tellp(), and write() functions from ostream.
fstream	Provides support for simultaneous input and output operations. Contains open() with default input mode. inherits all the functions from istream  and ostream classes through iostream.