perror()

write error message on standard error 

Function

SYNOPSIS

#include <stdio.h>

void perror(const char *s);

DESCRIPTION

The perror() function produces a message on the standard error output describing the error condition associated with the current value of errno. The string s is printed first, followed by a colon, a blank, the error message and a newline. If s is a null pointer or points to a null string, the colon is not printed.

PARAMETERS

s 

Is either null or a pointer to a null-terminated string.

RETURN VALUES

None.

CONFORMANCE

ANSI/ISO 9899-1990.

MULTITHREAD SAFETY LEVEL

MT-Safe.

PORTING ISSUES

If standard error is open in text mode, linefeed is translated to carriage-return linefeed on output. No such translation occurs if standard error is open in text mode.

In addition to printing messages for traditional UNIX errno values, the NuTCRACKER Platform implementation of perror() prints messages for Win32-specific error conditions. See api_intro for a description of how Win32 errors are interpreted.

AVAILABILITY

MKS Toolkit for Professional Developers
MKS Toolkit for Enterprise Developers
MKS Toolkit for Enterprise Developers 64-Bit Edition

SEE ALSO

api_intro

Functions:
strerror()

Miscellaneous:
errno

MKS Toolkit 9.2 Documentation Build 16.