What is a macro? Differentiate between macro and procedure. Explain macro expansion with example.

Show the complete macro expansion for:

#define SQUARE(x) ((x) * (x))

#define MAX(a, b) ((a) > (b) ? (a) : (b))

#define CUBE(x) (SQUARE(x) * (x))

result = MAX(SQUARE(3), CUBE(2));