#include <unistd.h>
#include <stdlib.h>
#include <omp.h>
#include <stdio.h>

#define THREADS 4
#define N 16

int main() {
    int i;

#pragma omp parallel for schedule(guided) num_threads(THREADS)
    for (i = 0; i < N; i++) {
        /* wait for i seconds */
        sleep(i);
        printf("Thread %d has completed iteration %d.\n", omp_get_thread_num(), i);
    }

    /* all threads done */
    printf("All done!\n");
    return 0;
}