C++ IOS Library - <ios>
Introduction
It is used to base class for streams (type-dependent components)
Definition
Below is definition of ios as shown below −
typedef basic_ios<char> ios;
Parameters
Parameters of ios should be like this −
charT − Character type.
traits − It is an aliased as member traits_type.
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 |
Public Member Functions
| Sr.No. | Member types | Definition |
|---|---|---|
| 1 | (constructor) | Construct object (public member function ) |
| 2 | (destructor) | Destruct object (public member function ) |
State flag functions
| 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 |
Formatting
Others
| Sr.No. | Member types | Definition |
|---|---|---|
| 1 | exceptions | It is used to get/set exceptions mask |
| 2 | imbue | Imbue locale |
| 3 | tie | It is used to get/set tied stream |
| 4 | rdbuf | It is used to get/set stream buffer |
| 5 | narrow | Narrow character |
| 6 | widen | Widen character |
Protected member functions
| Sr.No. | Member types | Definition |
|---|---|---|
| 1 | init | Initialize object |
| 2 | move | Move internals |
| 3 | swap | Swap internals |
| 4 | set_rdbuf | It is used to set stream buffer |
ios.htm
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