Why the following function is called thrice

Question

I had tried to debug but no luck I can\'t understand why the second printf() is call increment() thrice but the first one call twice as expected.

#include &l         


        

Answer 1

This happens because your macro will expand as ( (x) > (increment()) ? (x) : (increment()) ).

However, this is not the only problem, your code contains undefined behaviour. Parameters are not evaluated in a specified order.