@node ferror, stdio
@subheading Syntax

@example
#include <stdio.h>

int ferror(FILE *file);
@end example

@subheading Description

This function can be used to indicate if the given @var{file} has
encountered an error or not.  @xref{clearerr}.

@subheading Return Value

Nonzero for an error, zero otherwize.

@subheading Portability

@portability ansi, posix

@subheading Example

@example
if (ferror(stdin))
  exit(1);
@end example