48 lines
2.0 KiB
C++
48 lines
2.0 KiB
C++
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// fig13_08.cpp
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// Standard library multimap class template.
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#include <fmt/format.h> // C++20: This will be #include <format>
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#include <iostream>
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#include <map> // multimap class-template definition
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int main() {
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std::multimap<int, double> pairs{}; // create multimap
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std::cout << fmt::format("Number of 15 keys in pairs: {}\n",
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pairs.count(15));
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// insert two pairs
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pairs.insert(std::make_pair(15, 99.3));
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pairs.insert(std::make_pair(15, 2.7));
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std::cout << fmt::format("Number of 15 keys in pairs: {}\n\n",
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pairs.count(15));
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// insert five pairs
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pairs.insert({30, 111.11});
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pairs.insert({10, 22.22});
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pairs.insert({25, 33.333});
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pairs.insert({20, 9.345});
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pairs.insert({5, 77.54});
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std::cout << "Multimap pairs contains:\nKey\tValue\n";
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// walk through elements of pairs
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for (const auto& mapItem : pairs) {
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std::cout << fmt::format("{}\t{}\n", mapItem.first, mapItem.second);
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}
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}
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/**************************************************************************
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* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
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* Pearson Education, Inc. All Rights Reserved. *
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* *
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* DISCLAIMER: The authors and publisher of this book have used their *
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* best efforts in preparing the book. These efforts include the *
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* development, research, and testing of the theories and programs *
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* to determine their effectiveness. The authors and publisher make *
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* no warranty of any kind, expressed or implied, with regard to these *
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* programs or to the documentation contained in these books. The authors *
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* and publisher shall not be liable in any event for incidental or *
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* consequential damages in connection with, or arising out of, the *
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* furnishing, performance, or use of these programs. *
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**************************************************************************/
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