How to make main thread wait for all child threads finish?

Question

I intend to fire 2 threads in the main thread, and the main thread should wait till all the 2 child threads finish, this is how I do it.

void *routine(void *         


        

Answer 1

int main()
{
    pthread_t tid[2];
    for (int i = 0; i < 2; i++) {
        pthread_create(&tid[i], NULL, routine, NULL);
    }
    for (int i = 0; i < 2; i++)
       pthread_join(tid[i], NULL);
    return 0;
}