Oh,thanks

You forgot to write using System;

The instructions should be improved. It should be possible to solve the Kata without guessing and trying.

fixed, thanks

fixed, thanks

approved

@rowcased see this issue

C: the arguments are unsigned in the initial solution, but signed in the tests.

the null condition just not only for the input, but the result too.
if your result is < 0 then return null too.

Hope it help.

which language?

What do you mean by
"Expected: null +/- 9.9999999999999995E-07d"? Please fix the kata.

approved.

python new test framework

C Translation (author inactive).