#include <cstdlib>
#include <iostream>
#include <Windows.h>
#include <winable.h>
using namespace std;
int main()
{
int f = 1;
BlockInput(true);
SendMessage(HWND_BROADCAST, WM_SYSCOMMAND, SC_MONITORPOWER, (LPARAM) 2);
Sleep(100);
BlockInput(false);
while(f<50)
{...