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

using namespace std;

void *thread(void *arg)
{
    cout << "in thread, tid = " << pthread_self() << endl;

    sleep(60);

    return (void *)12;
}

int main()
{
    pthread_t tid;
    if(pthread_create(&tid, NULL, thread, 0) != 0)
    {
    cout << "pthread_create error" << endl;
    return 0;
    }

    pthread_cancel(tid);
    
    int *r;
    pthread_join(tid, (void**)&r);

    cout << PTHREAD_CANCELED << endl;
    cout << r << endl;
    
    cout << "in main thread, tid = " << pthread_self() << endl;
    return 0;
}