I'm trying to do something that is conceptually similar to this, but can't seem to get it to work (error shown at end) any ideas?
#include <stdio.h>
int main( int argc , char const *argv[] )
{
int abc_def_ghi = 42;
#define SUFFIX ghi
#define VAR(prefix) prefix##_def_##SUFFIX
printf( "%d\n" , VAR(abc) );
return 0;
}
// untitled:8: error: ‘abc_def_SUFFIX’ undeclared (first use in this function)
You just need additional indirection:
Even though it looks redundant, it's not.