diff --git a/slides/cours_14.md b/slides/cours_14.md
index 231421ff4113c8ee92b86b3c68769b3d8fc1744d..a76ee404bf977a6b28d16a4e18a988440609c545 100644
--- a/slides/cours_14.md
+++ b/slides/cours_14.md
@@ -107,3 +107,67 @@ bool search(table, key, value) {
 }
 ```
 
+# Écrivons le code!
+
+* Mais avant:
+    * Quelles sont les structures de données dont nous avons besoin?
+    * Y a-t-il des fonctions auxiliaires à écrire?
+    * Écrire les signatures des fonctions.
+
+. . .
+
+## Structures de données
+
+. . .
+
+```C
+typedef enum {empty, deleted, occupied};
+typedef ... key_t;
+typedef ... value_t;
+typedef struct _cell_t {
+    key_t key; 
+    value_t value;
+    state_t state;
+} cell_t;
+typedef struct _hm {
+    cell_t *table;
+    int capacity;
+    int size;
+} hm;
+```
+
+# Écrivons le code!
+
+## Fonctions auxiliaires
+
+. . .
+
+```C
+static int hash(key_t key);
+static int rehash(int index, key_t key);
+static int find_index(hm h, key_t key);
+```
+
+##  Signature de l'API 
+
+```C
+void hm_init(hm *h, int capacity);
+void hm_destroy(hm *h);
+bool hm_set(hm *h, key_t key, value_t *value);
+bool hm_get(hm h, key_t key, value_t *value);
+bool hm_remove(hm *h, key_t key, value_t *value);
+bool hm_search(hm h, key_t key);
+void hm_print(hm h);
+```
+
+# Live code session! 
+
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+
+. . .
+
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+