On Sun, Oct 18, 2009 at 7:52 AM, John Moore
Hi, Trying to get aprogram to count all the lines or words from a file. Not sure about the syntax. Probably missing some. Here's what I have so far any help in the right direction would be great.
import System.IO main :: IO () main = do incom <- openFile "file.txt" ReadMode otcom <- openFile "prob.txt" WriteMode fCount incom otcom hClose incom hClose otcom fCount incomh otcomh = do eof <- hIsEof incomh if eof then return() else do c <- hGetCount incom
it tells me parse error on =
John
Add a "where" before fCount - this lets you introduce auxiliary functions. Alternatively, you could define fCount at the top level. The way I would count all of the lines in a file is (untested) fCountLines :: String -> IO Int fCountLines = length . lines . readFile Hope that helps. Alex