[Haskell-beginners] another list comprehesion error

[Roelof Wobben]

hello, 

I know try to make this work.

The user enters a number and the programm calculates all the numbers which are smaller then the number and where x^2+Y^2=Z^2.
So  i Thought this would work.

roelof :: a -> b -> c -> (a,b,c)
roelof n = [(x y z) | x^2+Y^2=Z^2 <- x<-[1..n], y<- [1..n], z<-[1..n]]

But I get this error : oefening.hs:2:30: parse error on input `='

Roelof



 		 	   		  
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