What is the fundamental difference between __declspec(nothrow) and noexcept?

Question

C++ / C#

tell me what is the main difference between

__declspec(nothrow) void hello_world()
{}

from

void hello_world noexcept
{}

?

Answer 1

According to MSDN , __declspec(nothrow) is the Microsoft equivalent of the throw() specifier. The behavior of a function with the throw specifier is somewhat different from the behavior of a function with the noexcept specifier in case of an exception that will not be caught by such a function: throw() calls std::unexpected, and noexcept goes straight to std::terminate.