How do I join threads using the pthreads library?

How do I join threads using the pthreads library?

To join threads in the pthreads library, you use the pthread_join() function. This function allows one thread to wait for another to finish.

Can you give me an example of how to use pthread_join?

Sure! Here's a simple example:

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

void* threadFunction(void* arg) {
    printf("Thread is running\n");
    return NULL;
}

int main() {
    pthread_t thread;
    pthread_create(&thread, NULL, threadFunction, NULL);
    pthread_join(thread, NULL);
    printf("Thread has finished\n");
    return 0;
}

What happens if I don't call pthread_join?

If you don't call pthread_join(), the thread may become a zombie thread, and its resources won't be released until the process exits. This can lead to resource leaks.