In the header file, define macros DOG$\_$BIG, DOG$\_$HAIRY, DOG$\_$BROWN, DOG$\_$SMART. I should be able to call the function like this: AboutDog$("$Spike$",$ DOG$\_$BROWN $|$DOG$\_$SMART $|$DOG$\_$HAIRY$)$;

The above call should produce the output like this:

This dog is called Spike. It is hairy brown smart.

The order of features doesn't matter. Punctuation doesn't matter too. If description$==0$ skip the second sentence.