Working with other than just ASCII chars in C

Question

Not only in USA people use C to program. So how do we efficently output other characters not available in ASCII.
The following code works in Linux terminal as intended, but when I uncomment printf line, the other wprintf lines don't work.
Why is that happening? even with printf above the other statements.
https://code.sololearn.com/ce65sXpUjtL2/#c

Ive just noticed that in SoloLearn Playground the code doesn't show the characters either when the wprintf lines output messages.

So how to get around this? How can I write Hello world using other char sets to share with friends in Middle East, Asia, Russia, Greece, etc?

Answer 1

See this and try on other ide its working if u want to know how this code working your can copy link of stackoverflow and open through browser .

https://code.sololearn.com/cP3jJQet294b/?ref=app

Answer 2

Martin Taylor Yes I tried it that way works fine. 😅 But there may be a way to use the code provided in standard library, to store and format print the variables.

Well thanks to both, I cant tag the coffee guy I didnt understand his response it was more confusing.