Difference between the two designs?

Question

C++ / C#

What is the difference factor between these two?

cout << "Hello, World!";

// и

cout << string("Hello, World!");

Answer 1

cout << "Hello, World!";uses the operator<< overload associated with a null-terminated "hello" character array, which is a const char[6], to a const char* when passed as an operator<< argument:

template< class CharT, class Traits >
basic_ostream<CharT,Traits>& operator<<( basic_ostream<CharT,Traits>& os,
                                         const char* s );

cout << string("Hello, World!"); использует оператор<< перегрузка для работы со строками. 
string - это typedef для std::basic_string<char, std::char_traits<char>, std::allocator<char>>.