Treewalk

Finalyzed the treewalk algorithm, removed useless queue functions.

include/libdraw.h

@@ -9,12 +9,11 @@
   *
   * @version 1.0.0
   * @author Raphael Boucherie
-  * @author Matthieu Faverge
+  * @author Mathieu Faverge
   * @date 2017-04-04
   *
   **/
 
-#include <stdio.h>
 #ifndef _LIBDRAW_H_
 #define _LIBDRAW_H_
 
@@ -22,6 +21,12 @@
 
 BEGIN_C_DECLS
 
+/*
+ * Clobal array for color
+ */
+
+extern char *color[4];
+
 /*
  * function for treedraw
  */