#include<iostream>
using namespace std;

class falling_thing {
public:
	float posx, posy, posz;
	float velx, vely, velz;
	float fall_rate;

	/* Default constructor */
	falling_thing() {
		posx = posy = posz = 0;
		// .. and so on
	}

	/* Parameterized constructor */
	falling_thing(float xp, float yp, float zp, float xv, float yv, float zv, float fr){
		posx = px;
		// .. and the others

	}

	void move(){
		posx += velx;
		posy += vely;
		posz += velz;
		vely -= fall_rate;
	}
	
};