#include <stdio.h>
#include <pthread.h>

void* thread_func(void* arg) {
    int id = *(int*)arg;
    printf("Hello from thread %d\n", id);
    return NULL;
}

int main() {
    int N = 8;
    pthread_t threads[N];
    int ids[N];
    for (int i = 0; i < N; i++) {
        ids[i] = i;
        pthread_create(&threads[i], NULL, thread_func, &ids[i]);
    }
    for (int i = 0; i < N; i++)
        pthread_join(threads[i], NULL);
    return 0;
}