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Ah, good point. Yes, in this case, the macro would be designed to be working with variables already declared. I misread or misunderstood the intent.

Quzah.

It doesn't matter. Macros are compile-time text substitution. It's not going to put in "x" and "y". It's going to put in "a" and "b":

#define FOO(x,y) ( x && y )
...
FOO( a, b );What you're...