// Including a class from a file
#include <iostream>
#include <cmath>
using namespace std;

#include "Planet.h"

int main(){
   Planet Mars(6.4e23, 3.4e6), Jupiter(1.9e27, 7.0e7), x;

   cout << "Mars Density = " << Mars.Density() << endl;
   cout << "Mars Gravity = " << Mars.Gravity() << endl;

   cout << "Jupiter Density = " << Jupiter.Density() << endl;
   cout << "Jupiter Gravity = " << Jupiter.Gravity() << endl;
}