Extensions for Unicode support

The ISO C and ISO C++ Committees have approved the implementation of u-literals and U-literals to support Unicode UTF-16 and UTF-32 character literals, respectively. They are enabled under the EXTENDED and EXTENDED0X language levels.

Table 1. IBM® XL C++ extensions for unicode support
Language feature Discussed in: Required compilation option
UTF-16, UTF-32 literals UTF literals (IBM extension)

LANGLVL(EXTENDED0X)