double *parabel(double y0, double v0, int n, double g, double dt){
	double y = 0;
	double r[n];
	for(int i = 0; i < n; i++){
		y = y + v0 * dt - g * i * dt * dt;
		r[i] = y;
		cout << y << endl;
	}
	return r ;
}