#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
#include <signal.h>
/*
          int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
                                            void *(*start_routine) (void *), void *arg);
 */

void* thread_func(void*)
{
        while(1)
        {
                pause();
        }
}

void sigfunc(int)
{
        write(1, "!", 1);
        sleep(10);
}

int main()
{
        pthread_t tid;

        signal(SIGINT, sigfunc);

        if (pthread_create(&tid, NULL, thread_func, NULL) == -1)
        {
                perror("pthread_create");
                exit(1);
        }

        while(1)
        {
                pause();
        }

        return 0;
}