void forkexample() {
    pid_t *pids = malloc(10 * sizeof(pid_t));
    for (int i = 0; i < 10; i++) {
        pid_t pid = fork();
        if (pid < 0) {
            return;
        } else if (pid > 0) {
            pids[i] = pid;
        } else {
            printf("elo1 %d \n", getpid());
            sleep(i);
            printf("elo2 %d \n", getpid());
            exit(1);
        }
    }
    for (int i  = 0 ; i < 10 ; i++) {
        int status;
        waitpid(pids[i], &status, 0);
        printf("status: %d \n", WEXITSTATUS(status));
    }


}