How to restart Linux from inside a C++ program?

Question

I have a Qt 4 GUI where I need to have a option in a drop-down menu that allows the user to choose to restart the computer. I realize this might seem redunant with the ability t

Answer 1

In Linux:

#define LINUX_REBOOT_CMD_POWER_OFF 0x4321fedc   

sync();
reboot(LINUX_REBOOT_CMD_POWER_OFF);