void attach( filedesc fd );
Parameter
fd
A file descriptor as returned by a call to the run-time function _open or _sopen; filedesc is a typedef equivalent to int.
Remarks
Attaches this stream to the open file specified by fd. The function fails when the stream is already attached to a file. In that case, the function sets ios::failbit in the stream’s error state.
ofstream Overview | Output Stream Classes
See Also filebuf::attach, ofstream::fd