Function show

Examples/Modules/Chapter 13/Ex13_03A/Ex13_03A.cpp:9–13

import box;

void show(const Box& box)
{
  std::cout << std::format("Box({:.1f}, {:.1f}, {:.1f})", 
                  box.getLength(), box.getWidth(), box.getHeight());
}
void show(const Box& box1, std::string_view relationship, const Box& box2)
{
  show(box1); std::cout << relationship; show(box2); std::cout << std::endl;