// http://www.nicksays.co.uk/2009/05/awesome-c-exam-question/
// Answer: 5 16 -1 21

#include <stdio.h>

int func (int a, int b) {
	static int c = 1;
	return a + b * (c *= -1);
}

int main () {
	int a = 2, b = 3;
	int c = func(a, b);
	
	a *= a++;
	b *= ++b;
	
	printf("%d %d %d %d\n", a, b, c, func(a, b));
}