LANGLVL(C99PREPROCESSOR) compiler option (C++11)

This option controls whether the C99 preprocessor features adopted in C++11 are enabled. When LANG(C99PREPROCESSOR) is in effect, C99 and C++11 compilers provide a common preprocessor interface, which can ease the porting of C source files to the C++ compiler and avoid preprocessor compatibility issues. The default is LANG(NOC99PREPROCESSOR). For detailed information, see C99PREPROCESSOR | NOC99PREPROCESSOR that is documented in z/OS XL C/C++ User's Guide.