(This page describes the
iostream class, for a description of the C++ Input/Output Library see <a href="//ref/iostream/">iostream library</a>).
iostream objects inherit all members from both
istream and
ostream, thus being able to perform both input and output operations. The class is defined as:
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class iostream : public istream, public ostream {
public:
explicit iostream (streambuf * sb);
virtual ~iostream ();
}
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The class relies on a single
streambuf object for both the input and output operations.
Member functions
Members inherited from istream
| operator>> | Extract formatted data (public member function) |
| gcount | Get number of characters extracted by last unformatted input operation (public member function) |
| get | Get unformatted data from stream (public member function) |
| getline | Get line from stream (public member function) |
| ignore | Extract and discard characters (public member functions) |
| peek | Peek next character (public member function) |
| read | Read block of data (public member function) |
| readsome | Read block of data available in the buffer (public member function) |
| putback | Put character back (public member function) |
| unget | Decrement get pointer (public member function) |
| tellg | Get position of the get pointer. (public member function) |
| seekg | Set position of the get pointer (public member function) |
| sync | Synchronize input buffer with source of characters (public member function) |
| sentry | Perform exception safe prefix/suffix operations (public member classes) |
Members inherited from ostream
| operator<< | Insert data with format (public member function) |
| put | Put character (public member function) |
| write | Write block of data (public member function) |
| tellp | Get position of put pointer (public member function) |
| seekp | Set position of put pointer (public member function) |
| flush | Flush output stream buffer (public member function) |
| sentry | Perform exception safe prefix/suffix operations (public member classes) |
Member functions inherited from ios
| 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) |
| copyfmt | Copy formatting information (public member functions) |
| fill | Get/set the fill character (public member function) |
| 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) |
