string literals of different character encodings

[SSteven]

I am trying to create string literals of different character encodings:
1) UTF-8 string literal (using prefix u8"string")
2) char16_t string literal (using prefix u"string")
3) char32_t string literal (using prefix U"string")
4) wchar_t string literal (using prefix L"string")

The program compiles and runs:

#include <iostream>

using namespace std;

auto hu8 = u8"Hello, World!";
auto hu = u"Hello, World!";
auto hU = U"Hello, World!";
auto hw = L"Hello, World!";

int main()
{
    cout << hu8 << endl;
    cout << hu << endl;
    cout << hU << endl;
    cout << hw << endl;
}

https://ideone.com/cY2V6E


However, the O/P is correct only for the UTF-8 literal:

Hello, World!
0x2b011084eb60
0x2b011084eb28
0x2b011084eb28

Does this happen because char16_t, char32_t and wchar_t aren't supported?
This uses the gcc 6.33 compiler.

Thanks.

[TheIdeasMan]

There is std::wcout , but in cpp.sh it only worked for the last one.

Maybe you need this:

http://en.cppreference.com/w/cpp/locale/wstring_convert

Also try explicit types rather than auto. Which OS are you using?