Stream Classes in C++

                                 Stream Classes



What is the Stream Classes ?

The C++ I/O system contains a hierarchy of classes (known as stream classes) that are used for reading and writing by programs.

There are two types I/O  used in High level language of  the  C++  I/O in the :
1) Unformmated I/O
2) Formatted I/O

1) Unformmated I/O: Unformatted I/O uses functions :

•    put()
•    putline()
•    get()
•    getline()
•    write()
•    ignore()
•    putback()
•    peek()
•    gcount()
•   overloaded opreators >> (extraction ) are used in cin (cin means take a input of  the variable ) and <<(insertion)  are using the cout (cout means gives a output of the variable) in the program.

2) Formatted I/O: Formatted I/O uses functions :

• width()
• precision()
• fiill()
• setf()
• unsetf()
• Stream manipulators ( Defines the no the functions is called the manipulators  for example :      cout <<mani1<<mani2<<mani3<<mani4<<product;  show the all mani1 ,mani2,..,mani4  is manipulators )