Beginner needs help with password program

This is a discussion on Beginner needs help with password program within the C++ Programming forums, part of the General Programming Boards category; The problem I am having is that my program is not recognizing my password and when I enter the wrong ...

  1. #1
    Registered User
    Join Date
    Apr 2002
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    1

    Unhappy Beginner needs help with password program

    The problem I am having is that my program is not recognizing my password and when I enter the wrong password three times the program prints the "Wrong, try again" message before it prints the "See system administrator" message. Any help would be appreciated. My code is as follows:

    // Password Program

    #include<iostream.h>

    int main()
    {
    const int MAX=80;
    char password[MAX];
    int count=0;
    cout<<endl;
    cout<<"Enter a password to gain access to the Calendar Program:";
    cout<<endl;

    while (count<3)
    {
    cin.getline(password,MAX,'\n');

    if (password=="secret")
    count=99;
    else
    {
    cout<<"\nWrong password, please try again.\n";
    count++;
    }
    }

    if (count==99)
    cout<<"Welcome to the Calendar Program";

    if (count==3)
    cout<<endl;
    cout<<"\nSee your system administrator";
    cout<<endl;
    cout<<endl;
    cout<<endl;
    return 0;
    }

  2. #2
    I'm Back
    Join Date
    Dec 2001
    Posts
    556
    //if (password=="secret")

    this wont work, you'll have to use strcmp() in string.h

    basic structure --
    Code:
    if( strcmp(password,"secret")==0 )
     cout<<"ACCESS GRANTED";
    else
     cout<<"ACCESS DENIED";

  3. #3
    Amo ftbol!
    Join Date
    Dec 2001
    Posts
    2,136
    Or you could use strings from <string> include file and you could use the == operator.

  4. #4
    Rebooted Inquirer's Avatar
    Join Date
    Apr 2002
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    281
    I don't know if it is possible, but overloading the == operator for char* may do the trick... just have the explicit and implicit operators be compared by strcmp() in the overload function
    Compilers:
    GCC on Red Hat 8.1 (Primary)
    GCC on Mac OS X 10.2.4 (Secondary)

    Others:
    MinGW on XP

  5. #5
    Pygmy Monkey ErionD's Avatar
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    408
    if (count==3)
    cout<<endl;
    cout<<"\nSee your system administrator";
    cout<<endl;
    cout<<endl;
    cout<<endl;
    return 0;

    Wont you need brackets for this if statement?
    I believe that it will only do the cout << endl; there but im not sure....

  6. #6
    Nor
    Nor is offline
    h ֆhr s Nor's Avatar
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    Basic c++ syntax

    Wont you need brackets for this if statement?
    I believe that it will only do the cout << endl; there but im not sure....
    http://www.cprogramming.com/tutorial/lesson2.html
    The structure of an if statement is as follows:
    if (TRUE)
    Do whatever follows on the next line.

    To have more than one statement execute after an if statement that evaluates to true, use brackets.

    For example:
    if (TRUE)
    {
    Do everything between the brackets.
    }
    Try to help all less knowledgeable than yourself, within
    the limits provided by time, complexity and tolerance.
    - Nor

  7. #7
    Registered User
    Join Date
    Mar 2002
    Posts
    6

    Here is a simple solution:

    #include<iostream.h>
    #include<string>
    int main()
    {
    const int MAX=6;
    string password;
    int count=0;
    cout<<endl;
    cout<<"Enter a password to gain access to the Calendar Program:";
    cout<<endl;

    do
    {
    cin>>password;
    cout<<"\n";
    if (password=="secret")
    {
    count=99;

    }else
    {
    cout<<"\nWrong password, please try again.\n";
    count++;
    }
    }
    while (count<3);

    if (count==99)
    cout<<"Welcome to the Calendar Program";

    if (count==3)
    cout<<endl;
    cout<<"\nSee your system administrator";
    cout<<endl;
    cout<<endl;
    cout<<endl;
    return 0;
    }

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