text: #include <iostream>
  
  #include "command.h"
  
  int main() {
    Barbecuer* b = new Barbecuer();
    Command* bake_muttom_1 = new BakeMuttonCommand(b);
    Command* bake_muttom_2 = new BakeMuttonCommand(b);
    Command* bake_chicken_1 = new BakeChickenCommand(b);
    Waiter w;
  
    w.AddOrder(bake_muttom_1);
    w.AddOrder(bake_muttom_2);
    w.AddOrder(bake_chicken_1);
  
    w.Notify();
  
    delete b;
  
    return 0;
  }
  