Typedefs | |
| typedef basic_ios< char > | ios |
| One of the I/O forward declarations . | |
| typedef basic_streambuf< char > | streambuf |
| One of the I/O forward declarations . | |
| typedef basic_istream< char > | istream |
| One of the I/O forward declarations . | |
| typedef basic_ostream< char > | ostream |
| One of the I/O forward declarations . | |
| typedef basic_iostream< char > | iostream |
| One of the I/O forward declarations . | |
| typedef basic_stringbuf< char > | stringbuf |
| One of the I/O forward declarations . | |
| typedef basic_istringstream< char > | istringstream |
| One of the I/O forward declarations . | |
| typedef basic_ostringstream< char > | ostringstream |
| One of the I/O forward declarations . | |
| typedef basic_stringstream< char > | stringstream |
| One of the I/O forward declarations . | |
| typedef basic_filebuf< char > | filebuf |
| One of the I/O forward declarations . | |
| typedef basic_ifstream< char > | ifstream |
| One of the I/O forward declarations . | |
| typedef basic_ofstream< char > | ofstream |
| One of the I/O forward declarations . | |
| typedef basic_fstream< char > | fstream |
| One of the I/O forward declarations . | |
| typedef basic_ios< wchar_t > | wios |
| One of the I/O forward declarations . | |
| typedef basic_streambuf< wchar_t > | wstreambuf |
| One of the I/O forward declarations . | |
| typedef basic_istream< wchar_t > | wistream |
| One of the I/O forward declarations . | |
| typedef basic_ostream< wchar_t > | wostream |
| One of the I/O forward declarations . | |
| typedef basic_iostream< wchar_t > | wiostream |
| One of the I/O forward declarations . | |
| typedef basic_stringbuf< wchar_t > | wstringbuf |
| One of the I/O forward declarations . | |
| typedef basic_istringstream< wchar_t > | wistringstream |
| One of the I/O forward declarations . | |
| typedef basic_ostringstream< wchar_t > | wostringstream |
| One of the I/O forward declarations . | |
| typedef basic_stringstream< wchar_t > | wstringstream |
| One of the I/O forward declarations . | |
| typedef basic_filebuf< wchar_t > | wfilebuf |
| One of the I/O forward declarations . | |
| typedef basic_ifstream< wchar_t > | wifstream |
| One of the I/O forward declarations . | |
| typedef basic_ofstream< wchar_t > | wofstream |
| One of the I/O forward declarations . | |
| typedef basic_fstream< wchar_t > | wfstream |
| One of the I/O forward declarations . | |
For ease of use and compatibility, all of the basic_* I/O-related classes are given typedef names for both of the builtin character widths (wide and narrow). The typedefs are the same as the pre-Standard names, for example:
typedef basic_ifstream<char> ifstream;
Because properly forward-declaring these classes can be difficult, you should not do it yourself. Instead, include the <iosfwd> header, which contains only declarations of all the I/O classes as well as the typedefs. Trying to forward-declare the typedefs themselves (e.g., "class ostream;") is not valid ISO C++.
For more specific declarations, see http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#10
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1.2.18-20021030