diff --git a/admin_user.h b/admin_user.h
index 9f9533f..845d470 100644
--- a/admin_user.h
+++ b/admin_user.h
@@ -38,15 +38,13 @@ void admin_menu(){
     if(user == NULL){//invalid user
         return;
     }
-    printf("Welcome %s(%s)\n", user->name,user->role);
-    char * Items = {
+    char * Items[] = {
         "Inventory control",
         "Transaction control",
         "User control",
         "Role control",
     };
-    choice = choices_selecter(Items,4)
-    switch (choice)
+    switch (choices_selecter(Items,4,strcat("Welcome ")"""%s(%s)\n", user->name,user->role))
     {
         case 1://action with inventory
             inv_control();
@@ -137,7 +135,7 @@ void inv_control(){
         do{
         choice = prompt_inv_control();
         switch (choice){
-            case 1://list
+            case 1:;//list
                 //add a new element with product name new item
                 //for item control
                 struct inventory db = read_db_invt();   
@@ -736,7 +734,7 @@ struct Map* sortTrans(struct transaction db,int choice){
 
         switch(choice){
             case 1:
-            case 2:
+            case 2:;
                 long long temp = (long long)db.row[i].time.second+ db.row[i].time.minute*60 + db.row[i].time.hour*3600 + db.row[i].date.day*86400 + db.row[i].date.month*2592000 + db.row[i].date.year*31104000;
                 long long* tempstar = malloc(sizeof(long long));
                 *tempstar = temp;
@@ -744,19 +742,19 @@ struct Map* sortTrans(struct transaction db,int choice){
                 break;
 
             case 3:
-            case 4:
+            case 4:;
                 long* tempstar2 = malloc(sizeof(long));
                 *tempstar2 = db.row[i].barcode; 
                 map[i].value = (void*)tempstar2;
                 break;
             case 5:
-            case 6:
+            case 6:;
                 int* tempstar3 = malloc(sizeof(int));
                 *tempstar3 = db.row[i].quantity;
                 map[i].value = (void*)tempstar3;
                 break;
             case 7:
-            case 8:
+            case 8:;
                 long temp4 = lround(db.row[i].price * db.row[i].quantity * 10000);//clear all decimal places
                 long* tempstar4 = malloc(sizeof(long));
                 *tempstar4 = temp4;
@@ -982,20 +980,20 @@ struct Map* sortUser(struct user db,int choice){
         map[i].key = i;
         switch(choice){
             case 1:
-            case 2:
+            case 2:;
                 char* temp = malloc(sizeof(char) * 100);
                 strcpy(temp,db.row[i].name);
                 map[i].value = (void*)temp;
                 break;
 
             case 3:
-            case 4:
+            case 4:;
                 char* temp2 = malloc(sizeof(char) * 100);
                 strcpy(temp2,db.row[i].role);
                 map[i].value = (void*)temp2;
                 break;
             case 5:
-            case 6:
+            case 6:;
                 long* tempstar3 = malloc(sizeof(long));
                 *tempstar3 = db.row[i].id;
                 map[i].value = (void*)tempstar3;
diff --git a/main.c b/main.c
index 1a673d7..207532c 100644
--- a/main.c
+++ b/main.c
@@ -8,6 +8,7 @@
 #include<math.h>
 #include<time.h>
 #include<ctype.h>
+#include <stddef.h>
 #endif
 #ifndef CUSTOM_H
 #define CUSTOM_H
@@ -60,4 +61,4 @@ int main(){
     } while (check);
     
     return 0;
-}
\ No newline at end of file
+}
diff --git a/normal_user.h b/normal_user.h
index 9de73bf..020d60d 100644
--- a/normal_user.h
+++ b/normal_user.h
@@ -208,9 +208,9 @@ struct Map* sortItems(struct inventory db, int sort){
                 break;
 
             case 3:
-            case 4:
-                long price = db.row[i].price * 100;
-                long * price_star = malloc(sizeof(long));
+            case 4:;
+                double price = db.row[i].price * 100;
+                double * price_star = malloc(sizeof(long));
                 *price_star = price;
                 map[i].value = (void*)price_star;//presume there is no price contain  0.001
                 break;
diff --git a/utils.h b/utils.h
index d11a648..79438eb 100644
--- a/utils.h
+++ b/utils.h
@@ -1,10 +1,14 @@
-int choices_selecter(char * Items,int items) {
-  int choice =0
+int choices_selecter(char * Items[],int items,char * welcome_message ){
+  int choice = 0;
   do{
-    printf("Select An Option:");
+  	system("cls");
+    if ((*welcome_message) !=NULL){
+    	printf("%s",welcome_message)
+	}
+	printf("Select An Option:\n");
     int i;
-    for (i=0, i<items;i++){
-      print("%d. %s\n",i+1,Items[i]);
+    for (i=0; i<items;i++){
+      printf("%d. %s\n",i+1,Items[i]);
     }
     printf("%d. Exit\n",i+1);
     printf(">");