Does the size() method of the std::string class return the entire length of the string?

Question

C++ / C#

For example:

std::string line="abc";
int size=line.size(); // size == 3
// 'a' - 1 'b' - 2 'c' - 3

But what about the terminating null character in a string?
Does it not count?

Answer 1

std::string does not use the null character to store the terminator.
This, in particular, means that arbitrary data, including zeros, can be placed in std::string.