Temporarily prevent Windows machine from sleeping, allows monitors to turn off

NoSleep.cpp

#pragma comment(lib, "Kernel32")

#include <conio.h>
#include <Windows.h>
#include <WinBase.h>


int main()
{
    
    SetThreadExecutionState(ES_CONTINUOUS | ES_SYSTEM_REQUIRED | ES_AWAYMODE_REQUIRED);

    _cputs("System state set to not sleep.\nPress `t` to revert state and terminate.\n");

    char c;
    do {
        c = toupper(_getch());
    }
    while (c != 'T');

    SetThreadExecutionState(ES_CONTINUOUS);

}