/**

 *     $Id: tree.c,v 1.1.1.1 2008-04-28 17:32:53 mbroeker Exp $

 * $Source: /development/c/demos/tree.c,v $

 *

 */

#include <stdio.h>

#include <stdlib.h>

#include <time.h>

#define GETRANDOM(max) (1+(int)((float)max*rand()/RAND_MAX+1.0))

struct T {

    int data;

    struct T *next;

};

typedef struct T T;

T *make_list (int elements, int rand_max)

{

    int i;

    T *t;

    T *actual;

    T *first = NULL;

    srand (time (NULL));

    if ((t = malloc (sizeof (T) + 1)) == NULL) {

        perror ("MALLOC");

        return first;

    }

    t->data = GETRANDOM (rand_max);

    t->next = NULL;

    first = t;

    for (i = 1; i < elements; i++) {

        if ((actual = malloc (sizeof (T) + 1)) == NULL)

            break;

        actual->data = GETRANDOM (rand_max);

        actual->next = NULL;

        t->next = actual;

        t = actual;

    }

    return first;

}

int main (int argc, char **argv)

{

    T *t, *actual;

    if (argc != 3) {

        printf ("Usage: %s elements rand_max\n", argv[0]);

        return EXIT_SUCCESS;

    }

    t = make_list (atoi (argv[1]), atoi (argv[2]));

    while (t) {

        printf ("%d\n", t->data);

        actual = t->next;

        free (t);

        t = actual;

    };

    return EXIT_SUCCESS;

}