What will the SWAP macro in the following program be expanded to on preprocessing? will the code compile?

What will the SWAP macro in the following program be expanded to on pr

1.	What will the SWAP macro in the following program be expanded to on preprocessing? will the code compile?
A.	It compiles
B.	Compiles with an warning
C.	Not compile
D.	Compiles and print nothing
Answer» D. Compiles and print nothing