std::basic_iostream
From cppreference.com
Defined in header <istream>
|
||
template< class CharT, |
||
The class template basic_iostream
provides support for high level input/output operations on streams. The supported operations include sequential reading or writing and formatting. This functionality is implemented over the interface provided by the basic_streambuf
class. It is accessed through basic_ios
class.
Inheritance diagram
Two specializations for common character types are defined:
Defined in header
<istream> | |
Type | Definition |
iostream
|
basic_iostream<char> |
wiostream
|
basic_iostream<wchar_t> |
Member types
Member type | Definition |
char_type
|
CharT |
traits_type
|
Traits; the program is ill-formed if Traits::char_type is not CharT . |
int_type
|
Traits::int_type |
pos_type
|
Traits::pos_type |
off_type
|
Traits::off_type |
Member functions
constructs the object (public member function) | |
[virtual] |
destructs the object (virtual public member function) |
Protected member functions
(C++11) |
move-assigns another basic_iostream (protected member function) |
(C++11) |
exchanges the state with another basic_iostream (public member function) |
Inherited from std::basic_istream
Member functions
Formatted input | |
extracts formatted data (public member function of std::basic_istream<CharT,Traits> ) | |
Unformatted input | |
extracts characters (public member function of std::basic_istream<CharT,Traits> ) | |
reads the next character without extracting it (public member function of std::basic_istream<CharT,Traits> ) | |
unextracts a character (public member function of std::basic_istream<CharT,Traits> ) | |
puts character into input stream (public member function of std::basic_istream<CharT,Traits> ) | |
extracts characters until the given character is found (public member function of std::basic_istream<CharT,Traits> ) | |
extracts and discards characters until the given character is found (public member function of std::basic_istream<CharT,Traits> ) | |
extracts blocks of characters (public member function of std::basic_istream<CharT,Traits> ) | |
extracts already available blocks of characters (public member function of std::basic_istream<CharT,Traits> ) | |
returns number of characters extracted by last unformatted input operation (public member function of std::basic_istream<CharT,Traits> ) | |
Positioning | |
returns the input position indicator (public member function of std::basic_istream<CharT,Traits> ) | |
sets the input position indicator (public member function of std::basic_istream<CharT,Traits> ) | |
Miscellaneous | |
synchronizes with the underlying storage device (public member function of std::basic_istream<CharT,Traits> ) |
Member classes
implements basic logic for preparation of the stream for input operations (public member class of std::basic_istream<CharT,Traits> ) |
Inherited from std::basic_ostream
Member functions
Formatted output | |
inserts formatted data (public member function of std::basic_ostream<CharT,Traits> ) | |
Unformatted output | |
inserts a character (public member function of std::basic_ostream<CharT,Traits> ) | |
inserts blocks of characters (public member function of std::basic_ostream<CharT,Traits> ) | |
Positioning | |
returns the output position indicator (public member function of std::basic_ostream<CharT,Traits> ) | |
sets the output position indicator (public member function of std::basic_ostream<CharT,Traits> ) | |
Miscellaneous | |
synchronizes with the underlying storage device (public member function of std::basic_ostream<CharT,Traits> ) |
Member classes
implements basic logic for preparation of the stream for output operations (public member class of std::basic_ostream<CharT,Traits> ) |
Inherited from std::basic_ios
Member types
Member type | Definition |
char_type
|
CharT |
traits_type
|
Traits |
int_type
|
Traits::int_type |
pos_type
|
Traits::pos_type |
off_type
|
Traits::off_type |
Member functions
State functions | |
checks if no error has occurred i.e. I/O operations are available (public member function of std::basic_ios<CharT,Traits> ) | |
checks if end-of-file has been reached (public member function of std::basic_ios<CharT,Traits> ) | |
checks if an error has occurred (public member function of std::basic_ios<CharT,Traits> ) | |
checks if a non-recoverable error has occurred (public member function of std::basic_ios<CharT,Traits> ) | |
checks if an error has occurred (synonym of fail()) (public member function of std::basic_ios<CharT,Traits> ) | |
(until C++11)(since C++11) |
checks if no error has occurred (synonym of !fail()) (public member function of std::basic_ios<CharT,Traits> ) |
returns state flags (public member function of std::basic_ios<CharT,Traits> ) | |
sets state flags (public member function of std::basic_ios<CharT,Traits> ) | |
modifies state flags (public member function of std::basic_ios<CharT,Traits> ) | |
Formatting | |
copies formatting information (public member function of std::basic_ios<CharT,Traits> ) | |
manages the fill character (public member function of std::basic_ios<CharT,Traits> ) | |
Miscellaneous | |
manages exception mask (public member function of std::basic_ios<CharT,Traits> ) | |
sets the locale (public member function of std::basic_ios<CharT,Traits> ) | |
manages associated stream buffer (public member function of std::basic_ios<CharT,Traits> ) | |
manages tied stream (public member function of std::basic_ios<CharT,Traits> ) | |
narrows characters (public member function of std::basic_ios<CharT,Traits> ) | |
widens characters (public member function of std::basic_ios<CharT,Traits> ) |
Inherited from std::ios_base
Member functions
Formatting | |
manages format flags (public member function of std::ios_base ) | |
sets specific format flag (public member function of std::ios_base ) | |
clears specific format flag (public member function of std::ios_base ) | |
manages decimal precision of floating point operations (public member function of std::ios_base ) | |
manages field width (public member function of std::ios_base ) | |
Locales | |
sets locale (public member function of std::ios_base ) | |
returns current locale (public member function of std::ios_base ) | |
Internal extensible array | |
[static] |
returns a program-wide unique integer that is safe to use as index to pword() and iword() (public static member function of std::ios_base ) |
resizes the private storage if necessary and access to the long element at the given index (public member function of std::ios_base ) | |
resizes the private storage if necessary and access to the void* element at the given index (public member function of std::ios_base ) | |
Miscellaneous | |
registers event callback function (public member function of std::ios_base ) | |
[static] |
sets whether C++ and C IO libraries are interoperable (public static member function of std::ios_base ) |
Member classes | |
stream exception (public member class of std::ios_base ) | |
initializes standard stream objects (public member class of std::ios_base ) |
Member types and constants | |||||||||||||||||||||||||||||||||||||||
Type | Explanation | ||||||||||||||||||||||||||||||||||||||
stream open mode type
The following constants are also defined:
(typedef) | |||||||||||||||||||||||||||||||||||||||
formatting flags type
The following constants are also defined:
(typedef) | |||||||||||||||||||||||||||||||||||||||
state of the stream type
The following constants are also defined:
(typedef) | |||||||||||||||||||||||||||||||||||||||
seeking direction type
The following constants are also defined:
(typedef) | |||||||||||||||||||||||||||||||||||||||
specifies event type (enum) | |||||||||||||||||||||||||||||||||||||||
callback function type (typedef) |