diff --git a/include/WheelTimer.h b/include/WheelTimer.h
index 89652f9..848689d 100644
--- a/include/WheelTimer.h
+++ b/include/WheelTimer.h
@@ -53,6 +53,20 @@ typedef struct _wheel_timer_t {
     Timer_t* wheel_thread;
     slotlist_t reschd_list;
     unsigned int no_of_wt_elem;
+
+    /*Note*/
+    /*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
+    /*
+    * This is type of error which zero elements.
+    * This type of declaration is used to allocate
+    * contigious memory to array when they are a part
+    * of structure and they are dynamically allocated
+    * during allocation of memory of object the same
+    * structure.
+    * 
+    * structure ---> [ pro1, pro2, pro3, arr[..........] ]
+    */
+    /*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
     slotlist_t slotlist[0];
 } wheel_timer_t;
 
diff --git a/src/WheelTimer.c b/src/WheelTimer.c
index 38e1a67..88a0c28 100644
--- a/src/WheelTimer.c
+++ b/src/WheelTimer.c
@@ -133,8 +133,10 @@ wheel_fn(Timer_t* timer, void* arg) {
 wheel_timer_t*
 init_wheel_timer(int wheel_size, int clock_tic_interval) {
 
+    /*@@@@@@@@@@@@@@@@@@@*/
     wheel_timer_t* wt = calloc(1, sizeof(wheel_timer_t) +
         (wheel_size * sizeof(slotlist_t)));
+    /*@@@@@@@@@@@@@@@@@@@*/
 
     wt->clock_tic_interval = clock_tic_interval;
     wt->wheel_size = wheel_size;