Cookbook/Interactivity

Problem	Solution	Examples
printing a string	putStr	Prelude> putStr "Foo" FooPrelude>
printing a string with a newline character	putStrLn	Prelude> putStrLn "Foo" Foo Prelude>
reading a string	getLine	Prelude> getLine Foo bar baz --> "Foo bar baz"

Parsing command line arguments

TODO