Convert char* to string C++

Question

I know the starting address of the string(e.g., char* buf) and the max length int l; of the string(i.e., total number of characters is less than or equ

Answer 1

std::string str(buffer, buffer + length);

Or, if the string already exists:

str.assign(buffer, buffer + length);

Edit: I'm still not completely sure I understand the question. But if it's something like what JoshG is suggesting, that you want up to length characters, or until a null terminator, whichever comes first, then you can use this:

std::string str(buffer, std::find(buffer, buffer + length, '\0'));