10:12(21): preprocessor error: Error: macro foo invoked with 2 arguments (expected 1) 2 3 4 5 6(two,words) 7 8 9 10 11(two separate words) 12 13 14 15foo(two,words) 16 17 18 19((two,words)) 20 21 22 23((two,words)) 24(((two,words))) 25 26 27