Playing with threads

threadtest.c

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

void count() {
    int i = 0;
    for(i = 0; i < 10; i++) {
        usleep(1);
        printf("Counting: %d\n", i);
    }
}

int main(void) {
    printf("Hello world\n");

    pthread_t pth1;
    pthread_create(&pth1, NULL, count, NULL);
    pthread_t pth2;
    pthread_create(&pth2, NULL, count, NULL);

    pthread_join(pth1, NULL);
    pthread_join(pth2, NULL);
}