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Following code is a POSIX semaphore usage example. Fill in the blanks.

(assume proper headers were al1 included) int main (int argc, char** argv) sem if (seminit (&sen, 0, 1) == -1) print f (%s\n, strerror(errno): if printf (*** Critical Section **n İS: ( printf(* Non-Critical Section **n) if (semdestroy (&sem) = 0) printf(%s\n, strerror (errno)); return 0 (&sem) 0) printf(%s\n, strerror (errno)); ( & sem) .- 0) printf (%s\n, strerror (errno) ) ; -

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Answer #1

If you have any doubts, please give me comment...

int main(int argc, char** argv){

sem_t sem;

if(sem_init(&sem, 0, 1)==-1) printf("%s\n", strerror(errno));

if(sem_wait(&sem)!=0) printf("%s\n", strerror(errno));

printf("*** Critical Section ***\n");

if(sem_post(&sem)!=0) printf("%s\n", strerror(errno));

printf("*** Non-Critical Section ***\n");

if(sem_destroy(&sem)!=0) printf("%s\n", strerror(errno));

return 0;

}

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