Is there a C++ function to turn off the computer?

Is there a C++ function to turn off the computer? And since I doubt there is one (in the standard library, at least), what's the windows function that I can call from C++?

Basically, what is the code to turn off a windows xp computer in c++?

From stackoverflow

• On windows you can use the ExitWindows function described here:

  http://msdn.microsoft.com/en-us/library/aa376868(VS.85).aspx

  and here's a link to example code that does this:

  http://msdn.microsoft.com/en-us/library/aa376871(VS.85).aspx

• You can do this in Windows, by calling the ExitWindowsEx function.

• Use the following, assuming you have the privileges):

  ExitWindowsEx (EWX_POWEROFF | EWX_FORCEIFHUNG,
      SHTDN_REASON_MINOR_OTHER);
  

  This will cause power off while giving applications a chance to shut down (if they take too long, they'll be terminated anyway).

  It's part of the Win32 API rather than standard C++ but that's because C++ provides no way to do this directly.

• You can shutdown by utilizing the system() function.

  for Windows

  system("shutdown -s");
  

  for Linux

  system("poweroff");
  

  or

  system("init 0");