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

void *ticker(void *arg) {
    unsigned realarg = (unsigned)arg;
    for(int i=0; i<20; i+=1) {
        printf(">>> %d\n", i);
        usleep(realarg);
    }
    return NULL;
}

int main(int argc, const char *argv[]) {
    pthread_t clock;
    pthread_create(&clock, NULL, ticker, (void *)333333u);

    for(int i=0; i<20; i+=1) {
        printf("::: %d\n", i);
        usleep(400000u);
    }
    
    pthread_join(clock, NULL);
    
    return 0;
}