C preprocessor:Predefined Macros

Standard Predefined Macros

• __FILE__
• __LINE__
• __DATE_
• __TIME_
• __STDC__
• __STDC_VERSION__
• __STDC_HOSTED__
• __cplusplus
• __OBJC__

Common Predefined Macros

• __GNUC__
• __CNUC_MINOR__
• __GNUC_PATCHLEVEL__
• __GNUG__
• __STRICT_ANSI__
• __BASE_FILE__
• __INCLUDE_LEVEL__
• __ELF__
• __VERSION__
• __OPTIMIZE__
• __OPTIMIZE_SIZE__
• __NO_INLINE__
• __CHAR_UNSIGNED__
• __WCHAR_UNSIGNED__
• __REGISTER_PREFIX__
• __USER_LABEL_PREFIX__
• __SIZE_TYPE__
• __PTRDIFF_TYPE__
• __WCHAR_TYPE__
• __WINT_TYPE__
• __INTMAX_TYPE__
• __UINTMAX_TYPE__
• __CHAR_BIT__
• __SCHAR_MAX__
• __WCHAR_MAX__
• __SHRT_MAX__
• __LONG_MAX__
• __LONG_LONG_MAX__
• __IINTMAX_MAX__
• __DEPRECATED
• __EXCEPTIONS
• __USING_SJLJ_EXCEPTIONS__
• __GXX_WEAK__
• __NEXT_RUNTIME__
• __LP64__
• _LP64
• __SSP__
• __SSP_ALL__