NAME
ferror — test
error indicator on a stream
SYNOPSIS
#include
<stdio.h>
int ferror(FILE *stream);
DESCRIPTION
[CX] The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of POSIX.1-2024 defers to the ISO C standard.
The ferror () function shall test the
error indicator for the stream pointed to by stream.
[CX] The
ferror () function shall not change the setting of
errno if
stream is valid.
RETURN VALUE
The ferror () function shall return
non-zero if and only if the error indicator is set for
stream.
ERRORS
No errors are defined.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
clearerr(3), feof(3), fopen(3)
XBD <stdio.h>
CHANGE HISTORY
First released in Issue 1. Derived from Issue 1 of the SVID.
Issue 7
POSIX.1-2008, Technical Corrigendum 1, XSH/TC1-2008/0125 [401] is applied.