[OpenBSD]

Manual Page Search Parameters

PERROR(3) Library Functions Manual PERROR(3)

NAME

perrorwrite 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

intro(2), psignal(3), setlocale(3), strerror(3)

STANDARDS

The perror() function conforms to ANSI X3.159-1989 (“ANSI C89”).

HISTORY

The perror() function first appeared in Version 4 AT&T UNIX.
July 17, 2013 OpenBSD-5.9