为什么可以从函数返回“向量"?

Can we guarantee it will not die?

 std::vector<std::string> read_file(const std::string& path)
 {
    std::ifstream file("E:\names.txt");

    if (!file.is_open())
    {
        std::cerr << "Unable to open file" << "
";
        std::exit(-1);
    }

    std::vector<string> words;//this vector will be returned
    std::string token;

    while (std::getline(file, token, ','))
    {
        words.push_back(token);
    }

    return words;
}

推荐答案

我们能保证它不会死吗?