0. Design the UML diagram showing only the classes

   #include

   using namespace std;

   class Order{

   private:

   // declaring data members

   int OrderID;

   int TableNumber;

   bool Ready;

   string Ordered_food;

   bool Delivered;

   public:

   // default constructor

   Order(){

   OrderID = -1;

   TableNumber = -1;

   Ordered_food = "";

   Ready = Delivered = false;

   }

   // parameterized constructor

   Order(int id, int tno, string order){

   OrderID = id;

   TableNumber = tno;

   Ordered_food = order;

   Delivered = Ready = false;

   }

   // set delivered to true

   void MarkDelivered(){

   Delivered = true;

   }

   // return delivery status

   bool isDelivered(){

   return Delivered;

   }

   // return ready status

   bool isReady(){

   return Ready;

   }

   // set Ready to true

   void MarkReady(){

   Ready = true;

   }

   // print order details

   void OrderDetails(){

   cout << "Order ID: " << OrderID << endl;

   cout << "Table Number: " << TableNumber << endl;

   cout << "Ordered food: " << Ordered_food << endl;

   cout << "Order Ready?: " << Ready << endl;

   cout << "Order Delivered?: " << Delivered << endl;

   }

   };

   int main()

   {

   // testing the above class

   Order order(1, 20, "Pasta");

   order.OrderDetails();

   order.MarkReady();

   order.OrderDetails();

   order.MarkDelivered();

   order.OrderDetails();

   return 0;

   }

class chef { public: string chef_Name; int chef_id; int Num_order; int Assigned_order; void set_Name(string name)//set the chef name { chef_Name=name; } void set_Id(int id)//set the chef id { chef_id=id; } string getName()//return chef name { cout<<" chef Name="<

};