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Top Forums Programming A question about printing error message with perror Post 302344214 by dariyoosh on Saturday 15th of August 2009 06:19:09 AM
Old 08-15-2009
Question A question about printing error message with perror

Dear all,

I use perror in order to print an error message to the standar error. For example
if a C program is called without its two necessary command line parameters
then :

if (argc != 3)
    perror("use: ./myProgram <source file> <target file>\n");
    return 1;

Now the problem is whenever this error message is printed, I have this:
use: ./myProgram <source file> <target file>\n
: Success

What I don't understand is why there is a second line: ":Success"??
Is there a way to remove it? as I want to print an error message, it doesn't
really make sense to print Success.

Thanks in advance,
Kind Regards,

Last edited by dariyoosh; 08-15-2009 at 08:37 AM..

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PERROR(1)						       MySQL Database System							 PERROR(1)

perror - explain error codes SYNOPSIS
perror [options] errorcode ... DESCRIPTION
For most system errors, MySQL displays, in addition to an internal text message, the system error code in one of the following styles: message ... (errno: #) message ... (Errcode: #) You can find out what the error code means by examining the documentation for your system or by using the perror utility. perror prints a description for a system error code or for a storage engine (table handler) error code. Invoke perror like this: shell> perror [options] errorcode ... Example: shell> perror 13 64 OS error code 13: Permission denied OS error code 64: Machine is not on the network To obtain the error message for a MySQL Cluster error code, invoke perror with the --ndb option: shell> perror --ndb errorcode Note that the meaning of system error messages may be dependent on your operating system. A given error code may mean different things on different operating systems. perror supports the following options. o --help, --info, -I, -? Display a help message and exit. o --ndb Print the error message for a MySQL Cluster error code. o --silent, -s Silent mode. Print only the error message. o --verbose, -v Verbose mode. Print error code and message. This is the default behavior. o --version, -V Display version information and exit. COPYRIGHT
Copyright (C) 1997, 2014, Oracle and/or its affiliates. All rights reserved. This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see http://www.gnu.org/licenses/. SEE ALSO
For more information, please refer to the MySQL Reference Manual, which may already be installed locally and which is also available online at http://dev.mysql.com/doc/. AUTHOR
Oracle Corporation (http://dev.mysql.com/). MySQL 5.5 01/30/2014 PERROR(1)

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