/******************************************************** * An example source module to accompany... * * "Using POSIX Threads: Programming with Pthreads" *     by Brad nichols, Dick Buttlar, Jackie Farrell *     O'Reilly & Associates, Inc. * ******************************************************** * llist_test.c -- * * Exercizer program for linked list */#include "llist.h"#include <stdio.h>#include <stdlib.h>#define MAXDATALEN 40extern intmain(void) {    llist_t ll;  char *string;  int index;  llist_init(&ll);  while (TRUE) {    printf ("Input index number (or 0 to quit): ");    scanf ("%d", &index);    if (index == 0)       break;    string = malloc(MAXDATALEN);    if (string == NULL)       perror("malloc");    printf ("Input data char: ");    scanf ("%s", string);    llist_insert_data(index, string, &ll);  }  llist_show(&ll);  return 0;}