#include <iostream>

using namespace std;

//define new type point

struct point
{
	double x, y;

}; //don't forget the ;

//void midpoint(double x1, double y1, double x2, double y2, double& , double&);
point midpoint(point, point);
point readpoint(istream&);
void writepoint(ostream&, point);

int main() {

	//read point data (x, y) from console
	point p1, p2;
	char junk;

	p1.x = 3;
	p1.y = 2;
	//access the "data members" of point
	cout << "enter coordinates (x,y)";
	//cin >> junk >> p1.x >> junk >> p1.y >> junk;
	p1 = readpoint(cin);

	//assign p1 to p2
	p2 = p1;

	//print point data

	//cout << p1.x << " " <<  p1.y <<endl;
	writepoint(cout,p1);

	point p3 = midpoint(p1,p2);

  return 0;
}


point midpoint(point p1, point p2)
{
	point middle;

	middle.x = (p1.x + p2.x) /2;
	middle.y = (p1.y + p2.y) /2;

	return middle;
}

point readpoint(istream& IN)
{
	point p;
	char junk;
	IN >> junk >> p.x >> junk >> p.y >> junk;
	return p;
}

void writepoint(ostream& OUT, point p)
{
	OUT << '(' << p.x << ',' << p.y << ')';
}