Thread: Multiple users and passwords

Hey everyone,

I'm slowly working my way through "Jumping into C++" but can't seem to get passed this practice problem of creating multiple users and passwords (this is at p. 75 in the book, practice problem number 4). Right now I'm stuck trying to make it so two users, each with their own seperate password can log in, but only "user_1" and "password_1" seems to work.

Could anyone please tell me what I'm doing wrong here?

Thanks.

Code:

#include <iostream>
#include <string>
using namespace std;
int main()
{
    string user_1;
    string user_2;
    string password_1;
    string password_2;
    cout << "Enter username " << endl;
    getline (cin, user_1, '\n' ) || (cin, user_2, '\n');
    cout << "Enter password" << endl;
    getline (cin, password_1, '\n' ) || (cin, password_2, '\n');
    if (user_1 == "diddy" && password_1 == "kiddy")
    {
        cout << "Welcome diddy! " << endl;
    }
    else if (user_2 == "daddy" && password_2 == "kaddy")
    {
        cout << "Welcome daddy! " << endl;
    }
    else
    {
        cout << "Wrong! Imposter!! " << endl;
    }
}

well user_2 and password_2 never get any values. You only read on user_1 and password_1 variables(Getline function call). You have to compare user_1 to "daddy" and password_1 to "kaddy" too.

Code:

getline (cin, user_1, '\n' ) || (cin, user_2, '\n');

Lines 11 and 13 are wrong, and I'm not sure what you were trying there. Consider that you don't need two variables to hold the user name, it's an either/or situation, not both. Increase your compiler warning level, it should have notified you about the offending lines.

Great. I'll give that a try. Thanks to both of you.