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

static int counter;

static void *body(void *p)
{
    int i;
    const char *s = p;

    for (i = 0; i < 5; i++) {
        printf("%s: %d\n", s, counter++);
    }

    return NULL;
}

int main(int argc, char *argv[])
{
    pthread_t id;
    void *dummy;
    int res;

    counter = 10;

    res = pthread_create(&id, NULL, body, (void *)"Child");
    if (res) {
        perror("pthread_create");

        return -1;
    }

    body("Father");

    pthread_join(id, &dummy);

    return 0;
}