For the love of Mars bars

Today we had our first practical session. As part of the work I thought it might be a larf to ask the class to email me with the answer to a simple debugging question. This is the first ever lab for these folks, and so I thought not many would get in touch. I offered  a prize of a Mars bar for the first correct answer.

Lots of people like Mars bars it seems. Loads of responses. I've just spent around an hour going through and sending "Right but too late" messages.

I'm wondering about getting our labs sponsored by Mars...