int main()
{
    toto a, b;

    std::cout << compare(a, b) << ": should be 0" << std::endl;
    std::cout << compare(1, 2) << ": should be -1" << std::endl;
    std::cout << compare<const char *>("chaine Z", "chaineA42") << ": should be 1" << std::endl;
    const char *s1 = "42", *s2 = "lulz";
    std::cout << compare(s1, s2) << ": should be -1" << std::endl;
}