#include <stdio.h>
#include <time.h>
int main(void) {
 time_t diff = 2147483647 - time(NULL);
 if (diff == 0) printf("What are you doing on the computer?"
  "  The world is ending RIGHT NOW!\n");
 else if (diff < 0) {
  int sec = (diff *= -1) % 60;
  int min = (diff /= 60) % 60;
  int hours = (diff /= 60) % 24;
  int days = diff / 24;
  printf("The Apocalypse already happened %d days, %d hours, %d minutes, and "
   "%d seconds ago.\n", days, hours, min, sec);
 } else {
  int sec = diff % 60;
  int min = (diff /= 60) % 60;
  int hours = (diff /= 60) % 24;
  int days = diff / 24;
  printf("Y2K38 will occur in %d days, %d hours, %d minutes, and %d seconds.\n"
   "Save yourself!\n", days, hours, min, sec);
 }
 return 0;
}