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

#define THREADS 16

/* the function called for each thread */
void worker() {
    /* get our thread id */
    int id = omp_get_thread_num();
    printf("Thread %d says hello!\n", id);
}

int main() {
    int i;

#pragma omp parallel for num_threads(THREADS)
    for (i = 0; i < THREADS; i++) {
        worker();
    }
    return 0;
}