esercizio campane

#include<sys/types.h>
#include<unistd.h>
#include<stdio.h>
#include<pthread.h>

pthread_t tid;
int status,a=0,b=0,c=0;

void* funz1(void* arg)
{
tid=pthread_self();
int pid=getpid();
printf("[Thread1]TID:%u \n",(unsigned int) tid);
printf("DIN \n");
pthread_exit((void*)status);}

void* funz2(void* arg)
{
tid=pthread_self();
int pid=getpid();
printf("[Thread2]TID:%u \n",(unsigned int) tid);
printf("DON \n");
pthread_exit((void*)status);}


void* funz3(void* arg)
{
tid=pthread_self();
int pid=getpid();
printf("[Thread2]TID:%u \n",(unsigned int) tid);
printf("DAN \n");
pthread_exit((void*)status);}




int main() {

pthread_t t1,t2,t3;
int pid=getpid();
printf("[Main]PID:%d \n",pid);
int thr1=pthread_create(&t1, NULL, funz1, NULL);
if(thr1!=0)printf("Errore");

int thr2=pthread_create(&t2, NULL, funz2, NULL);
if(thr2!=0)printf("Errore");

int thr3=pthread_create(&t3, NULL, funz3, NULL);
if(thr2!=0)printf("Errore");


pthread_join(t1, (void*)status);
if(status==0) printf("Thread terminato \n");
printf("[Main]TID:%u \n", (unsigned int)tid);

pthread_join(t2, (void*)status);
if(status==0) printf("Thread terminato \n");
printf("[Main]TID:%u \n", (unsigned int)tid);

pthread_join(t3, (void*)status);
if(status==0) printf("Thread terminato \n");
printf("[Main]TID:%u \n", (unsigned int)tid);


    return 0;

}