seekoff

Alters the stream position within one of the controlled sequences if possible.

  virtual pos_type seekoff(
  off_type off,
  ios_base::seekdir way,
  ios_base::openmode which = ios_base::in | ios_base::out);

Remarks

The function seekoff() is overridden in strstream classes.

Returns new stream position if successful. Otherwise, it returns pos_type(off_type(-1)).