notme

 

using namespace std;

 

char generateChecksum(string s) {

    int checks = 0;

    for (int i=0; i <s.length(); i++) {

        int nr = (s[i] - 0x30);

        if (i % 3 == 0) checks += (7 * nr);

        if (i % 3 == 1) checks += (3 * nr);

        if (i % 3 == 2) checks += nr;

    }

    char ret = (checks % 10) + 0x30;

    return ret;

 

int main()

    string base     = "7881738905";

    string birth    = "";

    string expire   = "";

 

    cout    << "Geburts (yymmdd):";

    cin     >> birth;

    cout    << endl;

 

    cout    << "Ablauf (yymmdd):";

    cin     >> expire;

    cout    << endl;

 

    string subfinal = base + birth + generateChecksum(birth) + expire + generateChecksum(expire);

    string final    = base + "D << " + birth + generateChecksum(birth) + " < " + expire + generateChecksum(expire) + " <<<<<<< " + generateChecksum(subfinal);

 

    cout << "Personalausweisnummer:\n" << final;