PERROR

Section: C Library Functions (3)
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BSD mandoc
BSD 4

NAME

perror - write error messages to standard error

SYNOPSIS

Fd #include <stdio.h> Ft void Fn perror const char *string

DESCRIPTION

The Fn 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 Fa string is non- NULL it is prepended to the message string and separated from it by a colon and a space (`:' ) If Fa string is NULL only the error message string is printed.

The contents of the error message string is the same as those returned by Fn strerror with argument Fa errno .

STANDARDS

The Fn perror function conforms to St -ansiC .