ferror(3S)           STANDARD I/O FUNCTIONS            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).

























          Last change: C Programming Language Utilities         1