PERROR(3) NEWLIB PERROR(3)NAME
4.43 `perror'--print an error message on standard error
SYNOPSIS
#include <stdio.h>
void perror(char *PREFIX);
void _perror_r(struct _reent *REENT, char *PREFIX);
DESCRIPTION
Use `perror' to print (on standard error) an error message correspond‐
ing to the current value of the global variable `errno'. Unless you
use `NULL' as the value of the argument PREFIX, the error message will
begin with the string at PREFIX, followed by a colon and a space (`:
'). The remainder of the error message is one of the strings described
for `strerror'.
The alternate function `_perror_r' is a reentrant version. The
extra argument REENT is a pointer to a reentrancy structure.
RETURNS
`perror' returns no result.
PORTABILITY
ANSI C requires `perror', but the strings issued vary from one imple‐
mentation to another.
Supporting OS subroutines required: `close', `fstat', `isatty',
`lseek', `read', `sbrk', `write'.
SEE ALSOperror is part of the library. The full documentation for is main‐
tained as a Texinfo manual. If info and are properly installed at your
site, the command
info
will give you access to the complete manual.
NEWLIB April 2010 PERROR(3)
