#include <iostream.h> 
class box_car {
  public: double height, width, length;
};
double volume (box_car b) {
  return b.height * b.width * b.length;
}
main ( ) {
  box_car x;
  x.height = 10.5; x.width = 9.5; x.length = 40.0;
  cout << "The volume of the box_car is "
       << volume (x) << endl;
}