Does std::string have a null terminator?

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No, but if you say temp.c_str() a null terminator will be included in the return from this method.

It’s also worth saying that you can include a null character in a string just like any other character.

string s("hello");
cout << s.size() << ' ';
s[1] = '\0';
cout << s.size() << '\n';

prints

5 5

and not 5 1 as you might expect if null characters had a special meaning for strings.

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