◄Description► ◄Example► ◄Up► ◄Contents► ◄Index► ◄Back► ─────Run-Time Library─────────────────────────────────────────────────────── Include: <io.h>, <errno.h> Syntax: int _dup( int handle ); int _dup2( int handle1, int handle2 ); Returns: (_dup) a new handle if successful, or -1 if not. (_dup2) 0 if successful, or -1 if not. errno: EBADF, EMFILE See also: _open, _creat, _close, freopen -♦-