ferror(3S)

NAME

ferror, feof, clearerr, fileno − stream status inquiries

#include <stdio.h>

int ferror(FILE ∗stream);

int feof(FILE ∗stream);

void clearerr(FILE ∗stream);

int fileno(FILE ∗stream);

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 attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
MT-Level	MT-Safe