word.cpp

void FindWord(std::string in)
{
    std::string match("palabra");
    if (match==in)
        std::cout << "se encontro la palabra \n" ;  
}
int main()
{
    std::ifstream words("words.txt");
    if (words)
    {
        std::istream_iterator<std::string> start(words), finish;
        std::for_each(start, finish, FindWord);
    } else
        std::cout << "error!";
    return EXIT_SUCCESS;
}