diff --git a/ProjetS6.c b/ProjetS6.c
new file mode 100644
index 0000000..facc615
--- /dev/null
+++ b/ProjetS6.c
@@ -0,0 +1,61 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include "listechaines.j"
+
+typedef struct node {
+	char lettre;   
+    bool fdm;
+    struct node *fils_suiv;
+    struct node *frere_suiv;
+}Node, *PtNode, *Tree;
+
+void ajout_tete(Node * pl, char lettre) {
+    
+    PtNode ptr = malloc(sizeof(*ptr));
+    strcpy(ptr->lettre,lettre);
+    ptr->frere_suiv = *pl;
+    *pl = ptr;    
+
+}
+
+bool est_present(char lettre; struct node *tree) {        
+    while(tree->frere_suiv)!=NULL) {
+            if (lettre == (tree->lettre)) {
+                return true;
+            }
+    return false;
+    
+}
+
+void cons_tree(struct node ** ptr_tree, char lettre, struct node *fils_suiv, struct node *frere_suiv)
+{
+	*ptr_tree = malloc(sizeof(struct node));
+    (*ptr_tree)->lettre=lettre;
+    (*ptr_tree)->fils_suiv=fils_suiv;
+    (*ptr_tree)->frere_suiv=frere_suiv;
+}
+
+/*void ajouter_mot(struct node ** ptr_tree, char *mot) {
+    int i =0;
+    int etage=1;
+    if (*ptr_tree == NULL) {
+        cons_tree(ptr_tree,mot[i],NULL,NULL);
+        etage++;
+        return;
+    }
+    while (mot[i]!= NULL) {
+        if (est_present(mot[i],&ptr_tree) && (etage == i-1)) {
+            i++;
+            continue;
+            } else {ajout_tete(&ptr_tree,mot[i])}
+        
+    i++;
+    }
+    
+ */   
+    
+}
+void charger_dicho() {}
+void afficher_arbre() {}
+void free_tree() {}
--
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