std::string.resize() and std::string.length()

Question

I\'m relatively new to C++ and I\'m still getting to grips with the C++ Standard Library. To help transition from C, I want to format a std::string using printf

Answer 1

The std::string class takes care of the null terminator for you.

However, as pointed out, since you're using vnsprintf to the raw underying string buffer (C anachronisms die hard...), you will have to ensure there is room for the null terminator.