Reading a single whitespace-separated word from stdin

[Mark Isaacson via Digitalmars-d-learn]

Indeed. However, doing so looks more painful than redefining my 
goals. Upon further examination it seems that I had more 
flexibility than I originally estimated. Besides, the real reason 
I'm implementing this project is just to practice for when I get 
to write production D code in a week anyway; I'd rather learn the 
idioms.