[Haskell-beginners] Password Program Questions

I am very new to Haskell and I am attempting to make a simple password program as my first program. I have ran into a problem and I am not very sure on how to fix it. I do not know how to make a second section for the passwords. My guessing attempts have failed so I am asking for help. Here is my code main = do       putStrLn "Hello, Who are you?"      name <- getLine --User Input      putStrLn ("Hey " ++ name ++ ", What's the password?")      pass <- getLine      if pass == "12345"          then putStrLn ("Welcome")          pw          else do              putStrLn "That is wrong!"              mainpw = do    putStrLn "What Password do you need?" Thanks in advance, Casey :D