<string>
Defines the container template class basic_string and various supporting templates.
For a list of all members of this header, see <string> Members.
#include <string>
Remarks
The C++ language and the Standard C++ Library support two types of strings:
Null-terminated character arrays often referred to as C strings.
Template class objects, of type basic_string, that handle all char-like template arguments.
See Also
Reference
Thread Safety in the Standard C++ Library