NAME

ferror, feof, clearerr, fileno − stream status inquiries

SYNOPSIS

#include <stdio.h>

feof(stream)
FILE ∗stream;

ferror(stream)
FILE ∗stream

clearerr(stream)
FILE ∗stream

fileno(stream)
FILE ∗stream;

DESCRIPTION

Feof returns non-zero when end of file is read on the named input stream, otherwise zero.

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.

Clrerr 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

fopen(3S), open(2)

4th Berkeley Distribution  —  1 August 1985