C: Expand Macro With Token Pasting

Question

So here are some macros I have created:

#define MODULE_NAME moduleName
#define MODULE_STRUCT MODULE_NAME ## _struct
#define MODULE_FUNCTION(name) MODULE_NAME         


        

Answer 1

In C the operands of the token pasting operator ## are not expanded.

You need a second level of indirection to get the expansion.

#define CAT(x, y) CAT_(x, y)
#define CAT_(x, y) x ## y