PERROR(3) OpenBSD Programmer's Manual PERROR(3)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 ALSOintro(2), psignal(3), setlocale(3), strerror(3)STANDARDS
The perror() function conforms to ANSI X3.159-1989 (``ANSI C'').
OpenBSD 4.9 May 31, 2007 OpenBSD 4.9
