Base class with type-dependent members for the standard stream classes
The class is designed to be a base class for all of the hierarchy of stream classes.
Both this class and its parent class, ios_base, define the members of all standard streams that are independent of whether the stream object is an input or an output stream. ios_base describes the members that are independent of the template parameters, while this one describes the members that are dependent on the template parameters.
The class adds to the information kept by an ios_base-derived object, the following:
- fill character: character used to pad a field up to the field width. It can be obtained or modified by calling member function fill.
- pointer to tied stream: pointer to the stream object which is tied to this stream object. It can be obtained/modified by calling member function tie.
- pointer to stream buffer: pointer to the associated streambuf object. It can be obtained/modified by calling member function rdbuf.
Member functions
State flag functions:
| good | Check if the state of the stream is good for i/o operations. (public member function) |
| eof | Check if eofbit is set (public member function) |
| fail | Check if either failbit or badbit is set (public member function) |
| bad | Check if badbit is set (public member function) |
| operator! | Evaluate stream object (public member function) |
| rdstate | Get error state flags (public member function) |
| setstate | Set error state flag (public member function) |
| clear | Set error state flags (public member function) |
Formatting:
| copyfmt | Copy formatting information (public member functions) |
| fill | Get/set the fill character (public member function) |
Other:
| exceptions | Get/set exception mask (public member function) |
| imbue | Imbue locale (public member function) |
| tie | Get/set the tied stream (public member function) |
| rdbuf | Get/set the associated stream buffer (public member function) |
| narrow | Narrow character (public member function) |
| widen | Widen character (public member function) |
Member functions inherited from ios_base
| flags | Get/set format flags (public member function) |
| setf | Set specific format flags (public member function) |
| unsetf | Clear specific format flags (public member function) |
| precision | Get/Set floating-point decimal precision (public member function) |
| width | Get/set field width (public member function) |
| imbue | Imbue locale (public member function) |
| getloc | Get current locale (public member function) |
| xalloc | Return a new index for the internal extensible array [static] (public static member function) |
| iword | Get reference to integer element of the internal extensible array (public member function) |
| pword | Get reference to pointer of the internal extensible array (public member function) |
| sync_with_stdio | Activate/deactivate synchronization of iostream and cstdio streams [static] (public static member function) |
