Listing 1: Simple definition of class Shirt

   enum color { white, blue, tan, yellow };
   enum form  { regular, tall, big, formfit };
   enum style { longsleeve, shortsleeve };
   class Shirt {     // Improved Brute-Force Method
      color color_;
      form  form_;
      style style_;
   public:
      Shirt() : color_( white ), form_( regular ),
                style_( longsleeve ) {;}
      Shirt& arg( color x ) { color_ = x; return *this; }
      Shirt& arg( form x  ) { form_  = x; return *this; }
      Shirt& arg( style x ) { style_ = x; return *this; }
   };
   void fun( Shirt& );
   int main() {
      // You can define object with declaration-initialization
      Shirt s6 = Shirt().arg( yellow ).arg( shortsleeve );
      // You can also construct temporary objects on the fly
      fun( Shirt().arg( tall ) );
      fun( Shirt().arg( blue ).arg( shortsleeve ).arg( big ) );
      return 0;
   }