#include <iostream> #include <string> #include <unordered_map> #include <vector> class Order { private: std::unordered_map<std::string, int> capacities; public: Order () {} ~Order () {} void recv (const std::string& capacity, int quantity) { if (capacities.count (capacity)) capacities[capacity] += quantity; else capacities[capacity] = quantity; } void print_capacities_info() const { std::vector<std::string> list_of_2_or_more_items; std::cout << "----------------------------" << std::endl; for (const auto& pair : capacities) { std::cout << pair.first << ":\t " << pair.second << std::endl; if (pair.second > 1) list_of_2_or_more_items.push_back(pair.first); } std::cout << "----------------------------" << std::endl; std::cout << "List of 2 or more items" << std::endl; for (const auto& item : list_of_2_or_more_items) std::cout << item << std::endl; } }; int main () { std::string order_capacity[] = {"355ml", "355ml", "750", "1000ml", "8oz", "8oz", "100ml"}; int order_quantity[] = {1, 2, 100, 10, 1, 3, 1}; Order* order = new Order(); for (size_t i = 0; i < sizeof(order_capacity) / sizeof(order_capacity[0]); i++) order->recv(order_capacity[i], order_quantity[i]); order->print_capacities_info(); delete order; return 0; }

---------------------------- 8oz: 4 1000ml: 10 100ml: 1 750: 100 355ml: 3 ---------------------------- List of 2 or more items 8oz 1000ml 750 355ml

C++로도 참 쉽죠 잉?

C 코드 올렸더니 어떤 놈이 하도 지랄거려서

C++ 코드도 올립니다.

ㅋㅋㅋ