03-06-2003
Couldn't compile the simple "Hello World"
So, this is my first C++ program under linux. My OS is Red Hat 8.0, and my codes are like following:
$vi hello.cpp
#include <iostream>
using namespace std;
int main()
{
cout << "Hello World!" << endl;
return 0;
}
$ g++ -o hello hello.cpp
the error message are:
hello.cpp: In function `int main()':
hello.cpp:4: `cout' undeclared (first use this function)
hello.cpp:4: (Each undeclared identifier is reported only once for each
function it appears in.)
hello.cpp:4: `endl' undeclared (first use this function)
It could run under M$ with VS 6.0. Can someone tell me what I did wrong here? Thanx.
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LEARN ABOUT CENTOS
subscription-manager-gui
subscription-manager-gui(8) Subscription Manager subscription-manager-gui(8)
NAME
subscription-manager-gui - Launches the UI client of the Subscription Manager.
SYNOPSIS
subscription-manager-gui [--register]
DESCRIPTION
subscription-manager-gui opens the local client tool to manage subscriptions and installed products on Red Hat Enterprise Linux systems.
The same tasks that can be performed by invoking subscription-manager can be performed in the GUI, including registering systems with a
subscription management service, applying and removing subscriptions, and viewing the subscription status of installed products.
The Subscription Manager UI can also be opened by selecting the Red Hat Subscription Manager item from the Applications > System Tools menu
in RHEL 5.x or the System > Administration menu in RHEL 6.x.
OPTIONS
--register
If a system has not yet been registered, then the GUI registration page can be opened immediately, as the Subscription Manager GUI
comes up. This is only relevant for unregistered systems; if this is used after a system is registered, the option is ignored.
REFERENCES
For procedures and tasks that can be performed in the Subscription Manager UI, check the Gnome help files (by pressing <F1>) or refer to
the RHEL Subscription Management Guide at <https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Subscription_Management/1.0/html/Sub-
scription_Management_Guide/index.html>.
ASSOCIATED FILES
* /usr/sbin/subscription-manager-gui
* /usr/sbin/subscription-manager
* /etc/rhsm/rhsm.conf
BUGS
This client is part of Red Hat Subscription Manager. To file bugs against this client, go to https://bugzilla.redhat.com, and select Red
Hat > Red Hat Enterprise Linux > subscription-manager.
AUTHORS
Deon Lackey, <dlackey@redhat.com>.
COPYRIGHT
Copyright (c) 2010-2012 Red Hat, Inc. This is licensed under the GNU General Public License, version 2 (GPLv2). A copy of this license is
available at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
version 1.2 December 18, 2012 subscription-manager-gui(8)