using WordPair = std::pair<std::string::iterator, std::string iterator>;

WordPair GetWord(const std::string& data, const std::string iterator& offset)
{
    const auto firstIterator = std::find_if_not(offset, data.end(), isspace);

    return firstIterator == data.end() ? WordPair(data.end(), data.end()) : WordPair(firstIterator, std::find_if(firstIterator, data.end(), isspace));
}

std::string GetWordStr(const std::string& data, const WordPair& wordPair)
{
    if(wordPair==WordPair(data.end(), data.end())
        return "";
    return data.substr(wordPair.first - data.begin(), wordPair.second == data.end() ? std::string::npos : wordPair.second - data.begin());
}