我将如何检查 main 中的布尔变量，以便我的 do-while 循环遍历三个函数？

Question

Okay so my problem is I can't seem to find or think of anything that will go into the while argument that will check all three functions to see if each one is false please help! That is my problem!

class Validate
{
public: 
    Validate(string);
     Validate();
    bool checkLength();
    bool checkSpaces();
    bool checkUpper();
    //bool checkUpper(char);
private:
    string password;
    static const int LEN = 5;

};
Validate::Validate()
{

}
Validate::Validate(string pass)
{
    pass = password;

}
bool Validate:: checkLength()
{
        if (password.length() < LEN)
        {
            cout << "Password is not 5 characters." << "  please try again..." << endl;
            return true;
        }
        else 
            return false;

}
bool Validate::checkSpaces()
{
    if (password.find(' ') != string::npos)
    {
        cout << "Password can not have any spaces " << endl;
        return true;
    }
    else
        return false;
}
bool Validate::checkUpper()
{

    for (int i = 0; i < password.length(); i++)
    {
        if (!isupper(password[i]))
        {
            cout << "Password must have at least one uppercase" << endl;
            return true;
        }
        else
            return false;
    }



}

Main file

//DISPLAY 8.9 Using a Vector
#include <iostream>
#include <vector>
#include <string>
using namespace std;
#include "c:\Users\barta\OneDrive\Documents\Visual Studio 2015\Projects\Project 7\Project 7\Validate.h"

int main( )
{

    vector<string> data;
    string firstName, lastName, login, userName, password;
    Validate c;
    bool check;
    firstName = "1";

    cout << "Enter your first name.\n";
    getline(cin, firstName);
    while (firstName != "0")
    {

        cout << "Enter your last name.\n";
        getline(cin, lastName);
        do
        {

            cout << "Enter a password.\n";
            getline(cin, password);
            //password = c.checkLength();
            //password = c.checkSpaces();
            c.checkUpper();

        } while (false);

        lastName = lastName.substr(0, 5);

        userName = firstName.at(0) + lastName;
        login = userName + ", " + password;
        data.push_back(login);

        cout << "Enter your first name.\n";
        getline(cin, firstName);
    }

    cout << "  Login data entered \n" << endl;

        for (unsigned int i = 0; i < data.size(); i++)
        {
            cout << "  " << data.at(i) << endl;
        }



    system("pause");
    return 0;
}

Answer 1

Your question is slightly unclear, but I think you're looking for:

 bool flag;

 do
 {
        // All your existing code is here...

        Validate c{password};

        flag = c.checkLength() || c.checkSpaces() || c.checkUpper();

 } while (flag);

Your Validate class's constructor takes the password as a parameter, so you have to construct the object after the password is read, and not at the beginning of main() .