#include <iostream>
#include <vector>

using namespace std;

struct point_3D {
	point_3D();
	point_3D(double, double, double);
	double x, y, z;
};

int main() {
	vector<point_3D> vec;

	point_3D p(1.2, 0, 82.212);
	/*
	 * p.x = 1.2;
	 * p.y = 0;
	 * p.z = 82.212;
	 */

	vec.push_back(p);

	cout << vec[0].x << endl;
}

point_3D::point_3D() {
	x = 0;
	y = 0;
	z = 0;
}

point_3D::point_3D(double a, double b, double c) {
	x = a;
	y = b;
	z = c;
}