uptime utility for Windows

uptime.cpp

#include <stdio.h>
#include <windows.h>

DWORD ticks;
int days, hours, mins, secs;

void main()
{
  ticks = GetTickCount() / 1000;
  days = ticks / (24 * 60 * 60);
  ticks -= days * 24 * 60 * 60;
  hours = ticks / (60 * 60);
  ticks -= hours * 60 * 60;
  mins = ticks / 60;
  ticks -= mins * 60;
  secs = ticks;

  printf("\r\n\r\nUPTIME :  %d days, %d hours, %d mins, %d secs.\r\n\r\n", days, hours, mins, secs);
}