Password validator cpp

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cpp

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// by yaqeen
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#include <iostream>
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#include <cctype>
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using namespace std;
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int main (){
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    cout << "Enter password: ";
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    string password;
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    cin >> password;
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    bool uppercase = false;
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    bool lowercase = false;
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    bool punct = false;
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    bool digit = false;
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    bool greaterThanEight = true;
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    for (size_t i = 0; i < password.length(); i++)
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    {
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        int p = password[i];
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        if(isupper(p))
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        {
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          uppercase = true;
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        }
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        if (islower(p))
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        {
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           lowercase = true;
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        }
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        if (isdigit(p)
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        ){
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            digit = true;
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        }
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        if (ispunct(p))
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        {
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            punct = true;
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        }
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    }
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    if(password.length() < 8){
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        greaterThanEight = false;
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        cout << "Password must be more than 8 characters" << endl;
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    }
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    if (!uppercase){
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        cout << "Password must contain uppercase" << endl;
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    }
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      if (!lowercase){
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        cout << "Password must contain lowercase" << endl;
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    }
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      if (!digit){
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        cout << "Password must contain digit" << endl;
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    }
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      if (!punct){
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        cout << "Password must contain a punctuation" << endl;
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    }
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    if (digit && punct && lowercase && uppercase && greaterThanEight){
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        cout << "Password is super valid" << endl;
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    }
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    return 0;
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}