+#include <stdlib.h>
+
+#include "clist.h"
+
+link_t* list_new(int value) {
+ link_t* link_t_new;
+ link_t_new = malloc(sizeof(link_t));
+ link_t_new->value = value;
+ link_t_new->next = NULL;
+ return link_t_new;
+}
+
+link_t* list_append(link_t* head, int value) {
+
+ if (head == NULL) {
+ return head = list_new(value);
+ } else {
+ link_t* head_first = head;
+ while (head->next != NULL) {
+ head = head->next;
+ }
+ head->next = list_new(value);
+ return head_first;
+ }
+}
+
+link_t* list_prepend(link_t* head, int value) {
+ link_t* first_link = list_new(value);
+
+ first_link->next = head;
+ return first_link;
+}
+
+unsigned list_count(link_t* head) {
+ int count = 1;
+
+ if (head == NULL) { return 0; }
+ while (head->next != NULL) {
+ ++count;
+ head = head->next;
+ }
+ return count;
+}
+
+void list_set(link_t* head, unsigned index, int value) {
+
+ // FIXME: check for the index value validity
+ for (unsigned count = 0; count < index; count++) {
+ head = head->next;
+ }
+ head->value = value;
+}
+
+int list_get(link_t* head, unsigned index) {
+
+ if (index < list_count(head)) {
+ for (unsigned i = 0; i < index; i++) {
+ head = head->next;
+ }
+ return head->value;
+ } else {
+ return -1;
+ }
+}
+
+void list_clear(link_t* link) {
+
+ while (link != NULL) {
+ link_t* next_link = link->next;
+ free(link);
+ link = next_link;
+ }
+}