/* 3. ´ÙÀ½ ÇÁ·Î±×·¥ÀÇ Ãâ·ÂÀ» ½á¶ó. */

#include <stdio.h>

int key[5] = { 1, 2, 3, 4, 5 };

typedef struct _point {
	int x;
	int y;
} Point;

void abs(Point *a, Point *b, Point *c)
{
	if (a->x > b->x) c->x = a->x/10 - b->x/10;
	else c->x = b->x/10 - a->x/10;
	if (a->y > b->y) c->y = a->y/10 - b->y/10;
	else c->y = b->y/10 - a->y/10;
}

void add100(Point p)
{
	p.x = p.x + 100;
	p.y = p.y + 100;
}

main()
{
	Point a;
	Point b;
	Point c;

	a.x = key[0]*10 + key[1];
	a.y = key[2]*10 + key[3];
	b.x = key[1]*10 + key[0];
	b.y = key[3]*10 + key[2];

	abs(&a,&b,&c);
	add100(c);

	printf("a = (%d,%d)\n",a.x,a.y);
	printf("b = (%d,%d)\n",b.x,b.y);
	printf("c = (%d,%d)\n",c.x,c.y);
}