time/clocktest.c

   1 #include <stdio.h>
   2 #include <time.h>
   3
   4 main ()
   5 {
   6   volatile int i;
   7   double t1, t2, t;
   8
   9   t1 = (double) clock ();
  10   for (i = 0; i < 100000; ++i) ;
  11   t2 = (double) clock ();
  12
  13   t = (t2 - t1) / ((double) CLOCKS_PER_SEC);
  14   printf ("%f - %f = %f\n",t2,t1,t);
  15   return 0;
  16 }