/*  Launo Tuuri --- C-ohj (Taina) s97 ------ Laskarit 5  Tehtävä 4   */

#include <stdio.h>

struct iml { int a; int b; };

static void imltul(const struct iml *a)
{
	printf("%d,%di \n", a->a, a->b);
}
static void imlsum(struct iml *a, const struct iml *b)
{
	a->a += b->a;
	a->b += b->b;
}
static void imlkrt(struct iml *a, const struct iml *b)
{
	a->a *= b->a;
	a->b *= -b->b;
}
int main()
{
	struct iml eka = {2, 1},
		   toka = {3,2};
	struct iml *e = &eka,
		   *t = &toka;

	imltul(e);
	imltul(t);
	imlsum(e, t);
	imltul(e);
	imlkrt(e, t);
	imltul(e);
	return 0;
}