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Command: ferror | Section: 3 | Source: Digital UNIX | File: ferror.3.gz
ferror(3) Library Functions Manual ferror(3)
NAME
ferror - Tests the error indicator on a stream
LIBRARY
Standard C Library (libc.so, libc.a)
SYNOPSIS
#include <stdio.h>
int ferror(
FILE *stream);
STANDARDS
Interfaces documented on this reference page conform to industry stan-
dards as follows:
ferror(): XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information about in-
dustry standards and associated tags.
PARAMETERS
Specifies the input or output stream.
DESCRIPTION
The ferror() function tests whether input/output errors have occurred
on the specified stream.
NOTES
[Digital] The ferror() function may be a macro (depending on the com-
pile-time definitions used in the source). Consequently, you cannot
use this interface where a function is necessary; for example, a sub-
routine 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. Other-
wise, a value of 0 (zero) is returned.
RELATED INFORMATION
Functions: fopen(3), feof(3), fileno(3), clearerr(3)
Standards: standards(5) delim off
ferror(3)