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

#if BUG
#define P(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)
#else
#define P(fmt, ...) printf(fmt, ##__VA_ARGS__)
#endif

void* go(void *arg) {
    long tid = (long)arg;
    P("Thread %ld started\n", tid);
    for (int i=0; i < 100; i++) 
        P("%ld\n", tid+i);
    P("Thread %ld exited\n", tid);
    return 0;
}

int main() {
    int tcount = 3;
    pthread_t tids[tcount];
    for (int i=0; i < tcount; i++)
        pthread_create(&tids[i], 0, &go, (void*)(1000*i));
    for (int i=0; i < tcount; i++)
        pthread_join(tids[i], 0);
    return 0;
}