wally_z:
... a "void()" statement ...
Properly called a function. Might be void, or might be something else. I might do a little reading to get some basic concepts down. A good start: http://arduino.cc/en/Tutorial/Foundations
I also like the tutorial at http://www.cplusplus.com/, but it is general in nature and does not (understandably) reflect a couple of Arduino specifics, so you'll need to be able to sort those out. For instance, while all C programs need a main() function, with Arduino it's under the covers and you don't have to supply it yourself. Instead, the setup() and loop() functions must be written.