Unicode Identifiers and Source Code in C++11?

Question

I find in the new C++ Standard

2.11 Identifiers                  [lex.name]
identifier:
    identifier-nondigit
    identifier identifier-nondigit
    identi         


        

Answer 1

This article https://www.securecoding.cert.org/confluence/display/seccode/PRE30-C.+Do+not+create+a+universal+character+name+through+concatenation works with the idea that int \u0401; is compliant code, though it's based on C99, instead of C++0x.