case '9':
                                        system("clear");
                                        printf("Welcome to advance GET mode, type ? for help.\n");
                                        printf("get> ");
                                        scanf("%s", get_adv_val);
                                                while (strcmp (get_adv_val, "exit"))
                                                {
                                                        open_session(ip);
                                                        get_advance1(get_adv_val);
                                                        printf("get> ");
                                                        scanf("%s", get_adv_val);
                                                        close_session();
                                                }
                                        system("\nread -rs -n1 -p 'Press any key to continue ...'; echo");
                                break;




void get_advance1(char *get_adv_val) {
//      system("clear");
//      printf("Welcome to advance GET mode, type ? for help.\n");
//      printf("get> ");
//      scanf("%s", get_adv_val);
//              while (strcmp (get_adv_val, "exit"))
//              {
                        pdu = snmp_pdu_create(SNMP_MSG_GET);
                        get_node(get_adv_val, id_oid, &id_len);
                        snmp_add_null_var(pdu, id_oid, id_len);
                        status = snmp_synch_response(sess_handle, pdu, &response);
                        for(vars = response->variables; vars; vars = vars->next_variable)
                        print_value(vars->name, vars->name_length, vars);
//                      printf("get> ");
//                      scanf("%s", get_adv_val);
//              }

}