Function main

07.05-mapSortBooksByIsbn0/main.cpp:28–47

           >;

int main()
{
  const Book effectiveCpp{"Effective C++", "978-3-16-148410-0"};
  const Book fpCpp{"Functional Programming in C++",
                   "978-3-20-148410-0"};

  const Price normal{34.95};
  const Price reduced{24.95};

  // #A Use the map with Price as value
  MapBookSortedByIsbn<Price> book2Price{
    {{effectiveCpp, reduced},
     {fpCpp, normal}},  // #B Add some items to it
    cmp  // #C Sadly we have to know and pass the cmp function
  };

  for(const auto& [k, v] : book2Price) {
    printf("%s %s %f\n", k.title.c_str(), k.isbn.c_str(), v.amount);
  }
}