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  1. #include <algorithm>
  2. #include <cstdlib>
  3. #include <ctime>
  4. #include <functional>
  5. #include <iostream>
  6. #include <iomanip>
  7. #include <string>
  8. #include <utility>
  9. #include <vector>
  10.  
  11. struct coin
  12. {
  13.     coin(std::string name_, int value_) : value(value_), name(name_) {}
  14.     unsigned value;
  15.     std::string name;
  16. };
  17.  
  18. bool operator<(const coin& lhs, const coin& rhs)
  19. {
  20.     return lhs.value < rhs.value;
  21. }
  22.  
  23. int main()
  24. {
  25.     std::vector<std::pair<coin, int>> money = { //Coin data and amount
  26.         {{"Quarter", 25}, 0}, {{"Dime", 10}, 0}, {{"Nickel", 5}, 0}, {{"Penny", 1}, 0}
  27.     };
  28.     std::sort(money.begin(), money.end(), std::greater<std::pair<coin, int>>());
  29.  
  30.     srand(time(nullptr));
  31.     unsigned change = rand() % 100;
  32.  
  33.     std::cout << std::fixed << std::setprecision(2);
  34.     std::cout << "Change Due:   $" << (change / 100.0) << "\n";
  35.     std::cout << "Coin Dispenser will dispense:\n";
  36.     if (change == 0) {
  37.         std::cout << "No Coins\n";
  38.         return 0;
  39.     }
  40.     for(auto& data: money)  {
  41.         data.second = change / data.first.value;
  42.         change %= data.first.value;
  43.     }
  44.     for(const auto& data: money) {
  45.         if (data.second != 0)
  46.             std::cout << std::left << std::setw(11) <<
  47.                       (" " + data.first.name + ":") << data.second <<
  48.                       " ($" << (data.second * data.first.value / 100.0) << ")\n";
  49.     }
  50. }
  51.  
Success #stdin #stdout 0s 3480KB
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stdin
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Standard input is empty
stdout
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Change Due:   $0.42
Coin Dispenser will dispense:
 Quarter:  1 ($0.25)
 Dime:     1 ($0.10)
 Nickel:   1 ($0.05)
 Penny:    2 ($0.02)
https://ideone.com/ELhL6g
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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