A closed-book test on the picky details of syntax is pretty stupid, seeing as how any actual job won't care about whether you check references as long as you can confidently arrive at the right answer in a timely fashion. It doesn't matter whether you can write out the declaration for an array of pointers-to-member-functions; what matters is whether (a) you can recognize one when you come across it in the code, and (b) you can actually recognize an appropriate use for such a construct, should you ever come across one. Unfortunately, an HR drone can understand that you got 73% on some test, even if he can't understand any of the questions on the test or even have a basis to understand that the test has nothing to do with the job.