diff --git a/src/mainMenu.c b/src/mainMenu.c
index fdb0aa8..7b60ecf 100644
--- a/src/mainMenu.c
+++ b/src/mainMenu.c
@@ -24,15 +24,7 @@ bool checkIfInteger(char* userInput)
 bool chooseOption(int choiceInput)
 {
 
-    if(choiceInput < 1 || choiceInput > 4)
-    {
-        return false;	    
-    }
-
-    else
-    {
-        return true;	    
-    }
+    return !(choiceInput < 1 || choiceInput > 4);
 
 }
 
@@ -50,6 +42,8 @@ void ageInput()
 
     while (true)
     {
+	/*the userInput string is changed to a number with the strtol function*/
+
 	age = strtol(userInput,&userInputPointer,10);
 
         if((checkIfInteger(userInput))&& (agePermission(age)))
@@ -85,56 +79,40 @@ void ageInput()
     }
 
 }
+
 void menuInput()
 {
-
     char choiceInput[20];
-
     char* choiceInputPointer;
-
     int selection;
     
-    scanf("%s",choiceInput);
+    scanf("%s", choiceInput);
+    selection = strtol(choiceInput, &choiceInputPointer, 10);
     
-    while(true)
+    while (!checkIfInteger(choiceInput) || !chooseOption(selection)) 
     {
-        selection = strtol(choiceInput,&choiceInputPointer,10);
-
-        if(chooseOption(selection) == true && checkIfInteger(choiceInput) == true)
-	{
-            switch(selection)
-	    {
+        printf("Input invalid! try again!\n");
 
-                case 1 : printf("\nLoginAsCostumer() function will be implemented here soon\n\n");
+        scanf("%s", choiceInput);
 
-                         break;
-
-                case 2 : printf("\ncreateCostumerAccount() function will be implemented here soon\n\n");
-
-                         break;
-
-                case 3 : printf("\nLoginAsEmployee() function will be implemented here soon\n\n");
-
-                         break;
-
-                case 4 : printf("\e[1;1H\e[2J");
-
-			 printf("\nsee you next time !\n\n");
-
-                         break;
-                
-             }
-	    break;
-        }
+        selection = strtol(choiceInput, &choiceInputPointer, 10);
+    }
+    
+    switch(selection) 
+    {
+        case 1 : printf("\nLoginAsCostumer() function will be implemented here soon\n\n");
+                 break;
 
-        else
-        {
-            printf("Input invalid! try again!\n");
+        case 2 : printf("\ncreateCostumerAccount() function will be implemented here soon\n\n"); 
+                 break;
 
-	    scanf("%s",choiceInput);
-        }
-    }
+        case 3 : printf("\nLoginAsEmployee() function will be implemented here soon\n\n"); 
+                 break;
 
+        case 4 : printf("\e[1;1H\e[2J"); 
+                 printf("\nsee you next time !\n\n"); 
+                 break;
+    }     	
 }