Corso C++ 36 - esercizi funzioni - A

import std;

//controllo password: deve essere
// - lunga piu di 8 caratteri
// - contenere almeno una maiuscola
// - contenere almeno una cifra numerica
// - contenere almeno un carattere speciale
bool is_valid_password(const std::string& psw,
                       const std::string& speciali="&^!£#")
{
    //guard clause (clausola di guardia)
    if (psw.length() <8)
        return false;

    //flag (segnalini)
    bool trovata_maiuscola {false};
    bool trovata_cifra{ false };
    bool trovato_speciale{ false };

    for (char c : psw)
    {
        if (std::isupper(c))
            trovata_maiuscola = true;

        if (std::isdigit(c))
            trovata_cifra = true;

        if (speciali.contains(c))
            trovato_speciale = true;

        if (trovata_maiuscola && trovata_cifra && trovato_speciale)
            return true;
    }

    return false;
}

auto main() -> int
{
    std::string psw {"abcd"};
    std::println("{} {}", psw, is_valid_password(psw));

    psw="abcd1234";
    std::println("{} {}", psw, is_valid_password(psw));

    psw = "abAdssdd";
    std::println("{} {}", psw, is_valid_password(psw));

    psw = "aba1dssdd";
    std::println("{} {}", psw, is_valid_password(psw));

    psw = "aba!dssdd";
    std::println("{} {}", psw, is_valid_password(psw));

    psw = "aba!d4sdd";
    std::println("{} {}", psw, is_valid_password(psw));

    psw = "aBa!dss2dd";
    std::println("{} {}", psw, is_valid_password(psw));

    psw = "aBa!dss2dd";
    std::println("{} {}", psw, is_valid_password(psw, "/#?"));

    psw = "aBa?dss2dd";
    std::println("{} {}", psw, is_valid_password(psw, "/#?"));

    char s[] = "abcd";

    std::println("abcd {}", is_valid_password("abcd", "/#?"));



}