From: Daniel Schierbeck <daniel.schierbeck@...>
Date: 2006-08-15T21:10:09+09:00
Subject: Re: question about if-statements

fabsy wrote:
> Im a newbie to ruby (hehe).
> I have a question.
> Is there any better way to do this? :
> 
> ---------------
> puts "Enter Username"
> usr = gets
> puts "Enter Password"
> usr_pass = gets
> User = "user"
> Pass = "pass"
> 
> if usr > User
> 	if usr_pass > Pass
> 	puts "Correct user and pass"
> 	else
> 	puts "Correct user"
> 	puts "Wrong pass"
> 	end
> else
> 	if usr_pass > Pass
> 	puts "Correct pass"
> 	else
> 	puts "Wrong pass"
> 	end
> 	puts "Wrong user"
> end
> 
> ------------------------This is the same but in VB---------
> if usr = User and usr_pass = Pass then
> print "correct user and password"
> else
> if usr = User and usr_pass <> Pass then
> print "correct user and wrong password"
> else
> if usr <> User and usr_pass = Pass then
> print "correct password and wrong user"
> else
> if usr <> User and usr_pass <> Pass then
> print "wrong password and wrong user"
> end if
> end if
> end if
> end if
> -----------------------------------------------------
> 
> -------And how do i do this in ruby? ------
> If usr = User and usr_pass = Pass then
> print "Correct User and Pass"
> else
> print "Wrong User or Pass"
> endif

Question 1:

   print "enter username: "
   username = gets.chomp  # chomp removes the last newline

   print "enter password: "
   password = gets.chomp

   # using constants may not be the best approach...
   Username = "foo"
   Password = "bar"

   raise "incorrect username" unless username == Username
   raise "incorrect password" unless password == Password

   # the user is now authenticated

Question 2:

   if username == Username and password == Password
     # correct
   else
     # incorrect
   end


Cheers,
Daniel