Yep, it will. And if you read the kata, that will always produce the result required by the kata.

time / 2 will produce a trunacted integer result.

I think people don't understand "Best Practices" ... or maybe they understand irony just a little too well.

I like this because it does integer division, not float division.

While the clang++ compiler does a magnificent job of understanding the automatic typing between integers and doubles, I've had compilers in the past that would throw a hissy fit without explicity recasting the result.