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You can, of course, define macros with multiple arguments. The following, for example, is a macro that expands to an expression that provides the maximum of two numbers:
#define max (x, y) ((x) > (y) ? (x) : (y))
One modest advantage of using such a macro, instead of a function, is that
the macro works no matter what data types are associated with x and
y. One disadvantage is that the macro computes the value of the
larger of the two argument expressions twice.