Click above to get retro games delivered to your door ever month!

   difftime

   Usage
   #include <time.h>
   double difftime (time_t time2, time_t time1);

   Description
   The difftime macro subtracts time1 from time2, that is, calculates the
   time  elapsed  between  time1 and time2. The value  is  calculated  in
   seconds  elapsed. The arguments are normally obtained by two calls  to
   the time function.

   Example
   #include <stdio.h>
   #include <time.h>
   main()
   {
   register int delay;
   time_t start, finish;
        time(&start);
        for (delay = 0; delay < 1000; delay++)
        printf("%d \n", delay);
        time (&finish);
        printf("The delay lasted %.0f seconds",
        difftime(start, finish));
   }


   Return Value
   Returns the difference between time1 and time2 in seconds.