std::map<std::string, int> myDict;
myDict["hello"] = 1;
myDict["world"] = 2;
myDict["!"] = 3;

// iterating over key-value pairs:
for (std::map<std::string, int>::iterator it = myDict.begin(); it != myDict.end(); it++) {
    // the thing pointed to by the iterator is a pair<std::string, int>
    std::string key = it->first;
    int value = it->second;
    std::cout << "key = " << key << ", value = " << value << std::endl;
}