Timer Problem

/* timer.c */
/* Computes the time in seconds to do a computation */
#include <stdio.h>
#include <sys/types.h>
#include <time.h>
main()
{ int i;
time_t t1,t2;
(void) time(&t1);
for (i=1;i<=1000;++i)
printf(``%d %d %dn'',i, i*i, i*i*i);
(void) time(&t2);
printf(``n Time to do 1000 squares and
cubes= %d secondsn'', (int) t2-t1);
}