diff --git a/VANDAMME27.c b/VANDAMME27.c
index 12052b1..cf49616 100644
--- a/VANDAMME27.c
+++ b/VANDAMME27.c
@@ -145,60 +145,19 @@ Bool dateValide(Date * date)
     int j = date->jour;
     int m = date->moi;
     int a = date->annee;
-    int bis;
-    if(m != 2)
+    int daysinmonth[12]={31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+
+    if(y % 400 == 0 || (y % 100 != 0 && y % 4 == 0))//Si bis février = 29
+      daysinmonth[1]=29;
+    if (m<13)
     {
-        if(m >= 1 && m <= 7)
-        {
-            if(m %2 == 0)
-            {
-                if(j >= 1 && j <= 30) return TRUE;
-                else return FALSE;
-            }
-            else
-            {
-                if(j >= 1 && j <= 31) return TRUE;
-                else return FALSE;
-            }
-        }
-        else if(m > 7 && m <= 12)
-        {
-            if(m %2 == 0)
-            {
-                if(j >= 1 && j <= 31) return TRUE;
-                else return FALSE;
-            }
-            else
-            {
-                if(j >= 1 && j <= 30) return TRUE;
-                else return FALSE;
-            }
-        }
-        else return FALSE;
+      if( d <= daysinmonth[m-1] )
+        return 1;
+      else
+        return 0;
     }
     else
-    {
-        if(a %100 == 0)
-        {
-            if(a %400 == 0) bis = 1;
-            else bis = FALSE;
-        }
-        else
-        {
-            if(a %4 == 0)bis = 1;
-            else bis = FALSE;
-        }
-        if(bis == 1)
-        {
-            if(j >= 1  &&  j <= 29) return TRUE;
-            else return FALSE;
-        }
-        else
-        {
-            if(j >= 1 && j <= 28) return TRUE;
-            else return FALSE;
-        }
-    }
+      return 0;
 }
 
 void encoderArticle(Article * article)