C++ UTF-8 output with ICU

Question

I\'m struggling to get started with the C++ ICU library. I have tried to get the simplest example to work, but even that has failed. I would just like to output a UTF-8 stri

Answer 1

Your program will work if you just change the initializer to:

UnicodeString s("привет");

The macro you were using is only for strings that contain "invariant characters", i.e., only latin letters, digits, and some punctuation.

As was said before, input/output codepages are tricky. You said:

My terminal and font support UTF-8 and I regularly use the terminal with UTF-8. My source code is in UTF-8.

That may be true, but ICU doesn't know that's true. The process codepage might be different (let's say iso-8859-1), and the output codepage may be different (let's say shift-jis). Then, the program wouldn't work. But, the invariant characters using the API UNICODE_STRING_SIMPLE would still work.

Hope this helps.

srl, icu dev