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Introduction
It is an output stream objects can write sequences of characters and represent other kinds of data. Specific members are provided to perform these output operations.
Definition
Below is definition of std::ostream.
typedef basic_ostream<char> ostream;
Parameters
-
charT − Character type.
-
traits − Character traits class that defines essential properties of the characters used by stream objects.
Member types
| Sr.No. | Member types | Definition |
|---|---|---|
| 1 | event | Type to indicate event type |
| 2 | event_callback | Event callback function type |
| 3 | failure | Base class for stream exceptions |
| 4 | fmtflags | Type for stream format flags |
| 5 | Init | Initialize standard stream objects |
| 6 | iostate | Type for stream state flags |
| 7 | openmode | Type for stream opening mode flags |
| 8 | seekdir | Type for stream seeking direction flag |
| 9 | basic_istream::sentry | It is used to prepare stream for input |
| 10 | seekdirbasic_ostream::sentry | It is used to prepare stream for output |
Public Member Functions
| Sr.No. | Member types | Definition |
|---|---|---|
| 1 | (constructor) | Construct object (public member function ) |
| 2 | (destructor) | Destruct object (public member function ) |
Public member functions
| Sr.No. | Member Functions | Definition |
|---|---|---|
| 1 | gcount | It is used to get character count |
| 2 | get | It is used to get characters |
| 3 | getline | It is used to get line |
| 4 | ignore | It is used to extract and discard characters |
| 5 | peek | It is used to peek next character |
| 6 | read | It is used to read block of data |
| 7 | readsome | It is used to Read data available in buffer |
| 8 | putback | It is used to put character back |
| 9 | unget | It is used to unget character |
Formatted output
| Sr.No. | Output | Definition |
|---|---|---|
| 1 | operator>> | It is used to extract formatted input |
Unformatted output
| Sr.No. | Output | Definition |
|---|---|---|
| 1 | put | It is used to put character |
| 2 | write | It is used to write block of data |
Positioning
| Sr.No. | Position | Definition |
|---|---|---|
| 1 | tellp | It is used to get position in output sequence |
| 2 | seekp | It is used to set position in output sequence |
Synchronization
| Sr.No. | Synchronization | Definition |
|---|---|---|
| 1 | flush | It is used to flush output stream buffer |
Protected member functions
| Sr.No. | Member Functions | Definition |
|---|---|---|
| 1 | operator= | It is used to move assignment |
| 2 | swap | It is used to swap internals |
Public member functions inherited from basic_ios
| Sr.No. | Member types | Definition |
|---|---|---|
| 1 | good | It is used to check whether state of stream is good |
| 2 | eof | It is used to check whether eofbit is set |
| 3 | fail | It is used to check whether either failbit or badbit is set |
| 4 | bad | It is used to check whether badbit is set |
| 5 | operator! | Evaluate stream |
| 6 | rdstate | It is used to get error state flags |
| 7 | setstate | It is used to set error state flag |
| 8 | clear | It is used to set error state flag |
| 9 | fill | Get/set fill character |
| 10 | exceptions | It is used to get/set exceptions mask |
| 11 | imbue | Imbue locale |
| 12 | tie | It is used to get/set tied stream |
| 13 | rdbuf | It is used to get/set stream buffer |
| 14 | narrow | Narrow character |
| 15 | widen | Widen character |
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