A # Not Followed by a Macro Argument

(ISO C, §6.10.3) The C compiler can accept # tokens that do not appear before arguments in macro definitions.

Listing: Preprocessor Macros Using # Without an Argument

#define add1(x) #x #1  // OK, but probably not what you wanted:


 // add1(abc) creates "abc"#1


#define add2(x) #x "2" // OK: add2(abc) creates "abc2"

To use this feature, disable the ANSI Strict setting in the IDE options under DSC Compiler >> Language panel.