| 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | |
| 4 | /** Display a prompt to the user then wait for an integer input. */ |
| 5 | int promptValue(const char* prompt) { |
| 6 | printf("%s:\n", prompt); |
| 7 | int result; |
| 8 | scanf("%d", &result); |
| 9 | return result; |
| 10 | } |
| 11 | |
| 12 | /** Linked list of int */ |
| 13 | typedef struct link_s { |
| 14 | int value; |
| 15 | struct link_s* next; |
| 16 | } link_t; |
| 17 | |
| 18 | link_t* list_new(int value) { |
| 19 | link_t* link_t_new; |
| 20 | link_t_new = malloc(sizeof(link_t)); |
| 21 | link_t_new->value = value; |
| 22 | link_t_new->next = NULL; |
| 23 | return link_t_new; |
| 24 | } |
| 25 | |
| 26 | void list_append(link_t* head, int value) { |
| 27 | |
| 28 | while (head->next != NULL) { |
| 29 | head = head->next; |
| 30 | } |
| 31 | head->next = list_new(value); |
| 32 | } |
| 33 | |
| 34 | unsigned list_count(link_t* head) { |
| 35 | // And if head is not defined? |
| 36 | int count = 1; |
| 37 | |
| 38 | while (head->next != NULL) { |
| 39 | ++count; |
| 40 | head = head->next; |
| 41 | } |
| 42 | return count; |
| 43 | } |
| 44 | |
| 45 | int list_get(link_t* head, unsigned index) { |
| 46 | |
| 47 | if (index < list_count(head)) { |
| 48 | for (unsigned i = 0; i < index; i++) { |
| 49 | head = head->next; |
| 50 | } |
| 51 | return head->value; |
| 52 | } else { |
| 53 | return -1; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | void list_clear(link_t* link) { |
| 58 | |
| 59 | while (link != NULL) { |
| 60 | link_t* next_link = link; |
| 61 | free(link); |
| 62 | link = next_link; |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | int main() { |
| 67 | link_t* head = list_new(1); |
| 68 | printf("Longueur de la liste: %d\n", list_count(head)); |
| 69 | list_append(head, 2); |
| 70 | list_append(head, 3); |
| 71 | list_append(head, 4); |
| 72 | printf("Longueur de la liste: %d\n", list_count(head)); |
| 73 | printf("Valeur a index %d: %d\n", 2, list_get(head, 2)); |
| 74 | printf("Valeur a index %d: %d\n", 3, list_get(head, 3)); |
| 75 | printf("Valeur a index %d: %d\n", 4, list_get(head, 4)); |
| 76 | list_clear(head); |
| 77 | |
| 78 | return 0; |
| 79 | } |