Password validator cpp

// by yaqeen

#include <iostream>

#include <cctype>

using namespace std;

int main (){

    cout << "Enter password: ";

    string password;

    cin >> password;

    bool uppercase = false;

    bool lowercase = false;

    bool punct = false;

    bool digit = false;

    bool greaterThanEight = true;

    for (size_t i = 0; i < password.length(); i++)

    {

        int p = password[i];

        if(isupper(p))

        {

          uppercase = true; 

        }

        if (islower(p))

        {

           lowercase = true;

        }

        if (isdigit(p)

        ){

            digit = true;

        }

        if (ispunct(p))

        {

            punct = true;

        }

    }

    if(password.length() < 8){

        greaterThanEight = false;

        cout << "Password must be more than 8 characters" << endl;

    }

    if (!uppercase){

        cout << "Password must contain uppercase" << endl;

    }

      if (!lowercase){

        cout << "Password must contain lowercase" << endl;

    }

      if (!digit){

        cout << "Password must contain digit" << endl;

    }

      if (!punct){

        cout << "Password must contain a punctuation" << endl;

    }

    if (digit && punct && lowercase && uppercase && greaterThanEight){

        cout << "Password is super valid" << endl;

    }

    return 0;

}