For a second, you had me thinking that I was one of the 99%. "I think I know what a comptroller does, but . . . . "
Yep, I had the right definition stored in my neurons somewhere. Whew!
It is interesting that a comptroller seems to be an elected position. We don't vote for this person in any way (which gives Canadians a good excuse not to know what this position actually is).
Actually, we use the term "auditor general" for this position. It is a political appointed term (usually five years) and comes with a big office. Unfortunately for the political party that appoints the auditor general and the successor party, the auditor general always finds something wrong with government spending.