C++ String Interview Question

Question

I was recently in a C++ technical interview, where I was given a bit of simple string manipulation code, which is intended to take a string and return a string that is comprised

Answer 1

My only thought is that if this function is only called with C null-terminated strings, you might be requiring the extra construction of a std::string for parameter 's'.

Possibly the 'more' efficient method would be to allow either a std::string or const char *s passed in.