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Prolog program of login page

Posted By: Milind Mishra     Category: Artificial Intelligence     Views: 8643

Prolog program of login page.

Code for Prolog program of login page in Artificial Intelligence

domains
    person , password = symbol
predicates
    password_of(person,password)
    login
    count(integer)
    message(integer)
    
clauses
    password_of(Hetal,He).
    password_of(Prashant,pr).
    
    login :-
        makewindow(1,10,2,"Login",0,0,20,50),
        write("Welcome!   Please Login"),nl,
        count(3),
        write("Login Unsuccessful"),nl.
        
    login :-
        write("Login Successful"),nl.
        
    count(X) :-
        X <> 0,
        write("UserName :- "),
        readln(Username),
        write("Password :- "),
        readln(Password),
        not(password_of(Username,Password)),
        Y = X - 1,
        clearwindow,
        message(Y),
        count(Y).
    count(0).        
    
    message(X) :-
        X <> 0,
        write("Login Failed\nPlease Try Again!\n").
        
    message(0).
        
Goal
    login.


Output :    

Trial 1 :
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄLoginÄÄÄÄÄÄÄ
³Welcome!   Please Login
³UserName :- Hetal
³Password :- He
³


ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄLoginÄÄÄÄÄÄÄÄÄÄÄÄ
³Login Failed
³Please Try Again!
³UserName :-
³

Final Trial :

ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄLoginÄÄÄÄ
³Welcome!   Please Login
³UserName :- Prashant
³Password :- pr
³Login Successful
³
³Press the SPACE bar

  
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Milind Mishra
Milind Mishra author of Prolog program of login page is from India.
 
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Aadil Khan from United States Comment on: Apr 30
dude have a problem wht if i want to to keep the login window after the successful of the login attemp to show tht msg " logged succesfully " then if the user click or enter thn tht window should go to goal are again ?

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