NAME
perror —
write error messages to standard
error
SYNOPSIS
#include
<stdio.h>
void
perror(const
char *string);
DESCRIPTION
The
perror()
function looks up the language-dependent error message string affiliated
with an error number and writes it, followed by a new-line, to the standard
error stream.
If the argument string is not the
NULL pointer and is not zero length, it is prepended
to the message string and separated from it by a colon and a space
(‘: ’). Otherwise, only the
error message string is printed.
The contents of the error message string are the
same as those returned by
strerror()
with argument errno.
SEE ALSO
STANDARDS
The perror() function conforms to
ANSI X3.159-1989
(“ANSI C89”).
HISTORY
The perror() function first appeared in
Version 4 AT&T UNIX.