You're passing in the return value of gC() as the first parameter to fC(). gC() doesn't return anything, let alone a function. Also, you're only passing in one parameter into gC().

I'm not sure that makes sense?

My first attempt was about the same, until I realized I missed a requirement:

> Your function bothC should call both fC and gC no matter what

What happens in your code if fC fails?

Ah good point, forgot about that requirement.