FERROR(3S) FERROR(3S)
NAME
feof, ferror, clearerr, fileno - stream status inquiries
SYNOPSIS
#include <stdio.h>
int feof(stream)
FILE *stream;
int ferror(stream)
FILE *stream
int clearerr(stream)
FILE *stream
int fileno(stream)
FILE *stream;
DESCRIPTION
Feof returns non-zero if end of file has been encountered on
the named input stream, otherwise zero. After returning
EOF, stdio(3) functions will not necessarily return EOF
again; feof provides a lasting indication.
Ferror returns non-zero when an error has occurred reading
or writing the named stream, otherwise zero. Unless cleared
by clearerr, the error indication lasts until the stream is
closed.
Clearerr resets the error indication on the named stream.
Fileno returns the integer file descriptor associated with
the stream, see open(2).
These functions are implemented as macros; they cannot be
redeclared.
SEE ALSO
stdio(3)