字典就像在C/C++中实现(更新信息)

#include<iostream>
#include <unordered_map>

int main() {
    std::unordered_map<std::string, int> dictionary;

    // 添加键值对
    dictionary["apple"] = 1;
    dictionary["banana"] = 2;
    dictionary["orange"] = 3;

    // 更新键值对
    dictionary["apple"] = 4;

    // 输出键值对
    for (const auto& kv : dictionary) {
        std::cout << kv.first << " -> " << kv.second<< std::endl;
    }

    return 0;
}