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ferror(3)

NAME

ferror - Test the error indicator on a stream

SYNOPSIS

#include <stdio.h> int ferror( FILE *stream );

LIBRARY

Standard C Library (libc)

STANDARDS

Interfaces documented on this reference page conform to industry standards as follows: ferror(): XSH4.0, XSH4.2, XSH5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags.

PARAMETERS

stream Specifies the input or output stream.

DESCRIPTION

The ferror() function tests whether input/output errors have occurred on the specified stream.

NOTES

[Tru64 UNIX] The ferror() function may be a macro (depending on the compile-time definitions used in the source). Consequently, you cannot use this interface where a function is necessary; for example, a subroutine pointer cannot point to it.

RETURN VALUES

If an I/O error occurred when reading from or writing to the stream specified by the stream parameter, a nonzero value is returned. Otherwise, a value of 0 (zero) is returned.

SEE ALSO

Functions: fopen(3), feof(3), fileno(3), clearerr(3) Standards: standards(5) Network Programmer's Guide

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