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ifstream::open

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void open( const char* szName**, int** nMode = ios::in, int nProt = filebuf::openprot );

Parameters

szName

The name of the file to be opened during construction.

nMode

An integer containing bits defined as ios enumerators that can be combined with the OR ( | ) operator. See the ifstream constructor for a list of the enumerators. The ios::in mode is implied.

nProt

The file protection specification; defaults to the static integer filebuf::openprot. See the ifstream constructor for a list of the other allowed values.

Remarks

Opens a disk file and attaches it to the stream’s filebuf object. If the filebuf object is already attached to an open file, or if a filebuf call fails, the ios::failbit is set. If the file is not found, then the ios::failbit is set only if the ios::nocreate mode was used.

ifstream Overview |  Input Stream Classes

See Also   filebuf::open, ifstream::ifstream, ifstream::close, ifstream::is_open, ios::flags