clearerr

 NAME
  clearerr - clear error associated with a file pointer

 SYNOPSIS
  #include <stdio.h>

  void clearerr(fp);              (MACRO)
  FILE *fp;

 FUNCTION
  The clearerr() macro clears both the EOF flag and the ERROR
  flag associated with a file pointer.  When an ERROR occurs on
  a file pointer further fread, fwrite, and some other calls will
  not work (i.e. fail) until the ERROR indicator is cleared.

 NOTE
  refer to the file_pointer manual page for general information

 INPUTS
  FILE *fp;   file pointer to clear the error on.

 RESULTS
  none,   the error and EOF indicators are cleared

 SEE ALSO
  feof, ferror, rewind, fseek