first flow of .h, one main() compilng

lists.h

@@ -0,0 +1,27 @@
+/*
+ * lists
+ * architecture clients/serveur guinness
+ * Thomas Nemeth -- le 15 juin 2001
+ *
+ */
+
+
+#ifndef GUINNESS_LISTS
+#define GUINNESS_LISTS
+
+typedef struct elt_t_ {
+    char          *nom;
+    struct elt_t_ *next;
+} Elt;
+
+
+void  add_elt      (Elt **elt, const char *nom);
+void  remove_elt   (Elt **elt, const char *nom);
+void  remove_elt_n (Elt **elt, int i);
+int   get_nb_elts  (Elt  *elt);
+char *elt_number   (Elt  *elt, int i);
+int   exist_elt    (Elt  *elt, const char *nom);
+char *get_elt      (Elt  *elt, const char *nom);
+void  free_list    (Elt **elt);
+
+#endif