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passward program

This is a discussion on passward program within the C++ Programming forums, part of the General Programming Boards category; hey sir,... i wana make a passward program but not getting how?/ would u like to help me plzz.... but ...

  1. #1
    Registered User zarishize's Avatar
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    May 2011
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    passward program

    hey sir,... i wana make a passward program but not getting how?/ would u like to help me plzz.... but that programming must b easy so i could easily understand .. bcoz m a begineeer of c language .. :/ ..

  2. #2
    Registered User xentaka's Avatar
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    Well..

    Need a bit more information on what exactly you are trying to accomplish. Writing a simple program that would ask for a password before continuation would be something like:

    Code:
    #include <iostream>
    #include <string>
    
    using namespace std;
    
    int main()
    {
        string passwdOne;
    
        cout << "Please enter the password : ";
        getline(cin, passwdOne);
        if (passwdOne == "yourpasswordhere") {
            cout << endl << "stuff goes here" << endl;
        }
    
        return 0;
    
    }
    This is simplistic of course, but like I said before it depends on what you are trying to accomplish.

  3. #3
    Registered User KyussRyn's Avatar
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    Tokyo, Japan
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    7
    I would probably change the line
    Code:
        if (passwdOne == "yourpasswordhere") {
            cout << endl << "stuff goes here" << endl;
        }
    code to comparing individual characters:
    Code:
    bool result;
    int size;
    size = passwdOne.length();
    for( int x = 0; x < size; x++ ) {
        if( passwdOne[x] != passwdTwo[x] ) {
            result = false;
            break;
        }
        result = true;
    }
    Or something like this.

  4. #4
    Registered User
    Join Date
    Apr 2006
    Posts
    2,053
    Usually you never want to store the password. Instead you should apply a hash function the password, and compare it to a stored hash of the correct password. That way the is no way to obtain the password from the program if you don't know it.


    Quote Originally Posted by KyussRyn View Post
    I would probably change the line
    Code:
        if (passwdOne == "yourpasswordhere") {
            cout << endl << "stuff goes here" << endl;
        }
    code to comparing individual characters:
    Code:
    bool result;
    int size;
    size = passwdOne.length();
    for( int x = 0; x < size; x++ ) {
        if( passwdOne[x] != passwdTwo[x] ) {
            result = false;
            break;
        }
        result = true;
    }
    Or something like this.
    What for?
    rags_to_riches likes this.
    It is too clear and so it is hard to see.
    A dunce once searched for fire with a lighted lantern.
    Had he known what fire was,
    He could have cooked his rice much sooner.

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