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FERROR
!!!FERROR
NAME
SYNOPSIS
DESCRIPTION
ERRORS
CONFORMING TO
SEE ALSO
----
!!NAME


clearerr, feof, ferror, fileno - check and reset stream status
!!SYNOPSIS


__#include __


__void clearerr( FILE *__''stream''__);
int feof( FILE *__''stream''__);
int ferror( FILE *__''stream''__);
int fileno( FILE *__''stream''__);__
!!DESCRIPTION


The function __clearerr__ clears the end-of-file and
error indicators for the stream pointed to by
''stream''.


The function __feof__ tests the end-of-file indicator for
the stream pointed to by ''stream'', returning non-zero
if it is set. The end-of-file indicator can only be cleared
by the function __clearerr__.


The function __ferror__ tests the error indicator for the
stream pointed to by ''stream'', returning non-zero if it
is set. The error indicator can only be reset by the
__clearerr__ function.


The function __fileno__ examines the argument
''stream'' and returns its integer
descriptor.
!!ERRORS


These functions should not fail and do not set the external
variable ''errno''. (However, in case __fileno__
detects that its argument is not a valid stream, it must
return -1 and set ''errno'' to
__EBADF__.)
!!CONFORMING TO


The functions __clearerr__, __feof__, and
__ferror__ conform to X3.159-1989 (``ANSI
C'').
!!SEE ALSO


open(2), stdio(3)
----

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Last edited on Tuesday, June 4, 2002 12:24:18 am by "perry"

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