*****************Psuedo Code of Authentication System ***************
*********************************************************************

function AuthenticateUser()
  Run FOR loop From Step 4 to 19
   Ask the user for the UserName
   Ask the user for the password
   Call function ValidateCredential() pass UserName and Password as the parameter
   IF the user is succesfully authenticated
        Present the option for Log out  and Exit the Application
		Ask the user for the option
		IF the user chooses log out option
		     DISPLAY "You have been logged out successfully" and Logged out the User and Go to Step 3 
		ELSE
		
		     DISPLAY "You have exited the application" and EXIT the application
	    ENDIF
	ELSE
	    DISPLAY "Invalid password" AND increase Unsuccessful Attempt by 1 and DISPLAY the attempt to the user
		IF Unsuccessful Attempt is equal to 3 then EXIT the application
	ENDIF
   ENDFOR
END function AuthenticateUser

function ValidateCredential()
   Get the username
   Get the password
   Convert the password to the hash password using the MD5
   Compare the username and the generated password with the username and password in the file "credential.txt"
   IF username and password matched
        fetch the role from the file and read the required file and DISPLAY the content of file
   ENDIF
END function ValidateCredential