while(num < nelements) {
std::string::const_iterator tmp = it; // current string.begin()
it = std::find(tmp, end, '\0'); // look for null between tmp and end
strings.push_back(std::string(tmp, it)); // s[tmp:it)
while(num < nelements) {
std::string::const_iterator tmp = it; // current string.begin()
it = std::find(tmp, end, '\0'); // look for null between tmp and end
strings.push_back(std::string(tmp, it)); // s[tmp:it)