7. 4.19 The program shown in Figure E4.23 uses the Pthreads API. What would be the output from the program at LINE C and LINE P?

#include

#include

int value = 0;

void *runner(void *param); /* the thread */

int main(int argc, char *argv[])

{

pid_t pid;

pthread_t tid;

pthread_attr_t attr;

pid = fork();

if (pid == 0) { /* child process */

pthread_attr_init(&attr);

pthread create(&tid,&attr,runner,NULL);

pthread_join(tid,NULL);

printf("CHILD: value = %d",value); /* LINE C */

}

else if (pid gt; 0) { /* parent process */

wait(NULL);

printf("PARENT: value = %d",value); /* LINE P */

}

}

void *runner(void *param) {

value = 5;

pthread_exit(0);

}

Figure E4.23 C program for Exercise 4.19.