#define square(x) x*x main() { int i; i = 125/square(5); printf("%d",i); }

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#define square(x) x*x
main()
{
   int i;
   i = 125/square(5);
   printf("%d",i);
}

The answer is 125:

How:
i = 125 /square(5);
After preprocessing:
i = 125/5*5 ; --> (125/5) * 5 ;
i = 125 ;

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