Hi, George.  You might try posting your question to stackoverflow.com.  If you search for _setmode, _O_U16TEXT, and/or _O_U8TEXT there, you'll find answers to some related questions, possibly some that already explain what you are observing.  Take a look at this post.

In general, getting the Windows console to display non-ASCII characters can be challenging for a variety of reasons, especially when using std::cout or printf().

Tom.

On 12/18/20 7:56 AM, Jens Maurer via SG16 wrote:
Hi George,

This mailing list is for discussion of C++ standardization.

Your code contains many function calls that are not part
of the C++ standard, and have not been proposed to be part
of the C++ standard.  Maybe you are on a Windows environment;
if so, consider contacting Microsoft technical support for
help.  (Note: This is not an endorsement of Microsoft, and
I have no clue whether such approach would bear costs upon
you.)

In short, this mailing list is not a technical support forum.

Jens


On 18/12/2020 13.21, George Gialopoulos via SG16 wrote:
Code:
*
*
*_setmode(_fileno(stdout),_O_U16TEXT);*
*    wprintf(L"\x00B2");*
*    _setmode(_fileno(stdout),_O_U8TEXT);*
*    cout << " as it is.\n";*

These are 4 lines of code of a program I am working on. So, basically I am trying to add a unique character, the symbol of power of 2 it is, so I set the mode as above to '16TEXT' and then printed the character in the 2nd line. Finally I wanted to add some more text, so i turned the mode to '8TEXT'.  Then I put a 'cout' to whrite the rest of the text but it didn't print anything. I would be really thankful if you could advise me. Thank you for your attention.

(I am not quite sure that I sent this message to the right email. So, if not, please forward it to the right if you know it)