ferror(3S)             UNIX System V(C Development Set)              ferror(3S)


NAME
      ferror, feof, clearerr, fileno - stream status inquiries

SYNOPSIS
      #include <stdio.h>

      int ferror (FILE *stream);

      int feof (FILE *stream);

      void clearerr (FILE *stream);

      int fileno (FILE *stream);

DESCRIPTION
      ferror returns non-zero when an error has previously occurred reading
      from or writing to the named stream [see intro(3)], otherwise zero.

      feof returns non-zero when EOF has previously been detected reading the
      named input stream, otherwise zero.

      clearerr resets the error indicator and EOF indicator to zero on the
      named stream.

      fileno returns the integer file descriptor associated with the named
      stream; see open(2).

SEE ALSO
      open(2), fopen(3S), stdio(3S).

























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