#include <stdio.h>

#include <time.h>

​

int main () {

   time_t start_t, end_t;

   double diff_t;

​

   printf("Starting of the program...\n");

   time(&start_t);

​

   printf("Sleeping for 5 seconds...\n");

   sleep(5);

​

   time(&end_t);

   diff_t = difftime(end_t, start_t);

​

   printf("Execution time = %f\n", diff_t);

   printf("Exiting of the program...\n");

​

   return(0);

}