In the hint for 1. Rounding Scores, it says:
<vector>.pop_back()will remove and return the last item in avector.
This is not correct: cplusplus.com/reference/vector/vector/pop_back/. It returns nothing.
Perhaps something like this should be written instead:
<vector>.back()will return the last item in avector.<vector>.pop_back()will remove the last item in avector.
I also tried to create a PR on GitHub: Update hints.md by Prin-S · Pull Request #710 · exercism/cpp (github.com).