/* 3. ´ÙÀ½ ÇÁ·Î±×·¥ÀÇ Ãâ·ÂÀ» ½á¶ó. */

#include <stdio.h>

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

void add(Point *a,Point *b, Point c)
{
	c.x = a->x + b->x;
	c.y = a->y + b->y;
}

void add1(Point *p)
{
	p->x = p->x + 1;
	p->y = p->y + 1;
}

main()
{
	Point a = { 10, 10 };
	Point b = { 20, 30 };
	Point c = { 40, 50 };

	add(&a,&b,c);
	add1(&c);

	printf("result = (%d,%d)\n",c);
}