When a child process complete the execution before the parent process exits, which of the following is correct? the child process becomes defunct the parent process becomes defunct the child process becomes a zombie All of the above code example

Example: reap zombie process in c

void delete_zombies(void)
{
    pid_t kidpid;
    int status;

    printf("Inside zombie deleter:  ");
    while ((kidpid = waitpid(-1, &status, WNOHANG)) > 0)
    {
         printf("Child %ld terminated\n", kidpid);
    }
    siglongjmp(env,1);
}