basic_iostream

Overview

basic_iostream class is designed to read from and write to various streams such as  files and memory.

Details

The class template basic_iostream provides support for high level input and output operations on file streams and memory streams. The supported operations include formatted input and output (e.g. integer values or whitespace-separated characters and characters strings) and unformatted input and output(e.g. raw characters and character arrays). 

basic_iostream class is basically derived class of  basic_istream and basic_ostream. It has no additional functionality other than constructor. It's the parent class of basic_fstream that deals with file system and basic_stringstream that deals strings in memory.

Syntax

template<class CharT, class Traits = char_traits<CharT>> 
class basic_iostream: public basic_istream<CharT,Traits> , public basic_ostream<CharT,Traits> 

where CharT can be char or wchar_t. It's derived from basic_ios class.

member types
Following properties are defined. 
Name
Definition
char_type
char,wchar_t
traits_type
char_traits<char_type>
int_type
char_traits<char_type>::int_type
pos_type
char_traits<char_type>::pos_type
off_type
char_traits<char_type>::off_type

Constructor
Name
Description
basic_iostream
(basic_streambuf* sb)
Constructs an object of class basic_iostream, assigning initial values to its member objects by calling init(sb). If sb is a null pointer, the stream is placed in error state by setting its badbit.