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#include <stdio.h>

struct point {
	int x;
	int y;
};

/* ÀÎÀÚ Àü´Þ ¹æ½Ä ÁÖÀÇ */
void findCenterPoint(struct point p,struct point q,struct point r)
{
	p.x = (q.x + r.x) / 2;
	p.y = (q.y + r.y) / 2;
}

void printPoint(char *name,struct point p)
{
	printf("%s = (%d,%d)\n",name,p.x,p.y);
}

main()
{
	struct point a;
	struct point b;
	struct point c;

	a.x = 10;
	a.y = 10;
	b.x = 20;
	b.y = 30;
	c.x = 0;
	c.y = 0;

	findCenterPoint(c,a,b);
	printPoint("c",c);	
}