std::basic_ostream
Defined in header <ostream>
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template< class CharT, |
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The class template basic_ostream
provides support for high level output operations on character streams. The supported operations include formatted output (e.g. integer values) and unformatted output (e.g. raw characters and character arrays). This functionality is implemented in terms of the interface provided by the basic_streambuf
class, accessed through the basic_ios
base class. In typical implementations, basic_ostream
has no non-inherited data members.
Two specializations for common character types are also defined:
Defined in header
<ostream> | |
Type | Definition |
ostream
|
basic_ostream<char> |
wostream
|
basic_ostream<wchar_t> |
Global objects
Six global basic_ostream objects are provided by the standard library.
Defined in header
<iostream> | |
writes to the standard C output stream stdout (global object) | |
writes to the standard C error stream stderr, unbuffered (global object) | |
writes to the standard C error stream stderr (global object) |
Member types
Member type | Definition |
char_type
|
CharT |
traits_type
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Traits |
int_type
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Traits::int_type |
pos_type
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Traits::pos_type |
off_type
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Traits::off_type |
Member functions
constructs the object (public member function) | |
[virtual] |
destructs the object (virtual public member function) |
(C++11) |
move-assigns from another basic_ostream (protected member function) |
Formatted output | |
inserts formatted data (public member function) | |
Unformatted output | |
inserts a character (public member function) | |
inserts blocks of characters (public member function) | |
Positioning | |
returns the output position indicator (public member function) | |
sets the output position indicator (public member function) | |
Miscellaneous | |
synchronizes with the underlying storage device (public member function) | |
(C++11) |
swaps stream objects, except for the associated buffer (protected member function) |
Member classes
implements basic logic for preparation of the stream for output operations (public member class) |
Non-member functions
inserts character data (function template) |
Inherited from std::basic_ios
Member types
Member type | Definition |
char_type
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CharT |
traits_type
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Traits |
int_type
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Traits::int_type |
pos_type
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Traits::pos_type |
off_type
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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 ) | |
checks if end-of-file has been reached (public member function of std::basic_ios ) | |
checks if an error has occurred (public member function of std::basic_ios ) | |
checks if a non-recoverable error has occurred (public member function of std::basic_ios ) | |
checks if an error has occurred (synonym of fail()) (public member function of std::basic_ios ) | |
(until C++11)(since C++11) |
checks if no error has occurred (synonym of !fail()) (public member function of std::basic_ios ) |
returns state flags (public member function of std::basic_ios ) | |
sets state flags (public member function of std::basic_ios ) | |
clears error and eof flags (public member function of std::basic_ios ) | |
Formatting | |
copies formatting information (public member function of std::basic_ios ) | |
manages the fill character (public member function of std::basic_ios ) | |
Miscellaneous | |
manages exception mask (public member function of std::basic_ios ) | |
sets the locale (public member function of std::basic_ios ) | |
manages associated stream buffer (public member function of std::basic_ios ) | |
manages tied stream (public member function of std::basic_ios ) | |
narrows characters (public member function of std::basic_ios ) | |
widens characters (public member function of std::basic_ios ) |
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) |