-*- outline -*-* How to see macros expansion?** GCC. $ cpp <file>.c** MSVC. $ cl /E <file>.c* Who to see predefined macros?See http://predef.sourceforge.net/ http://en.wikipedia.org/wiki/C_preprocessor#Compiler-specific_predefined_macros** GNU C Compiler. $ gcc -dM -E - < /dev/null** HP-UX ansi C compiler. $ cc -v EMPTY.c** SCO OpenServer C compiler. $ cc -## EMPTY.c** Sun Studio C/C++ compiler. $ cc -## EMPTY.c