title: How to input several values in one line in haskell
body: <p>For example, I want to write a program which will take 3 integers as input from command line. The functions I have learned is <code>readLn</code> to read values from entire line. But <code>readLn</code> seems to parse the entire line as a single value. How can I get the three values of one line with haskell?</p>