// fig13_08.cpp
// Standard library multimap class template.
#include <fmt/format.h> // C++20: This will be #include <format>
#include <iostream>
#include <map> // multimap class-template definition

int main() {
   std::multimap<int, double> pairs{}; // create multimap
   std::cout << fmt::format("Number of 15 keys in pairs: {}\n",
      pairs.count(15));

   // insert two pairs
   pairs.insert(std::make_pair(15, 99.3));
   pairs.insert(std::make_pair(15, 2.7));
   std::cout << fmt::format("Number of 15 keys in pairs: {}\n\n",
      pairs.count(15));

   // insert five pairs
   pairs.insert({30, 111.11});
   pairs.insert({10, 22.22});
   pairs.insert({25, 33.333});
   pairs.insert({20, 9.345});
   pairs.insert({5, 77.54});

   std::cout << "Multimap pairs contains:\nKey\tValue\n";

   // walk through elements of pairs                    
   for (const auto& mapItem : pairs) {
      std::cout << fmt::format("{}\t{}\n", mapItem.first, mapItem.second);
   }
}


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