```/*
*
*  This file is the solution to an exercise problem posed during
*  one of the UW CSE 333 lectures (333exercises).
*
*  333exercises is free software: you can redistribute it and/or modify
*  the Free Software Foundation, either version 3 of the License, or
*  (at your option) any later version.
*
*  333exercises is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  You should have received a copy of the GNU General Public License
*  along with 333exercises.  If not, see <http://www.gnu.org/licenses/>.
*/

// lec 15 exercise 1

#include <iostream>
#include <stdlib.h>

#include "./Shape.h"
#include "./Circle.h"
#include "./Triangle.h"
#include "./Square.h"

int main(int argc, char **argv) {
std::cout.precision(10);

Circle c(std::pair<double, double>(5, 5), 10);
std::cout << c.Print() << std::endl;
std::cout << "  area: " << c.Area() << std::endl;
std::cout << "  centroid: " << c.Centroid() << std::endl;
c.Move(std::pair<double, double>(1,2));
std::cout << "  post-move centroid: " << c.Centroid() << std::endl;

Triangle t(std::pair<double, double>(5, 5),
std::pair<double, double>(7, 5),
std::pair<double, double>(6, 6));
std::cout << t.Print() << std::endl;
std::cout << "  area: " << t.Area() << std::endl;
std::cout << "  centroid: " << t.Centroid() << std::endl;
t.Move(std::pair<double, double>(1,2));
std::cout << "  post-move centroid: " << t.Centroid() << std::endl;

Square s(std::pair<double, double>(5, 5),
std::pair<double, double>(6, 5),
std::pair<double, double>(6, 6),
std::pair<double, double>(5, 6));
std::cout << s.Print() << std::endl;
std::cout << "  area: " << s.Area() << std::endl;
std::cout << "  centroid: " << s.Centroid() << std::endl;
s.Move(std::pair<double, double>(1,2));
std::cout << "  post-move centroid: " << s.Centroid() << std::endl;

return EXIT_SUCCESS;  // defined in stdlib.h
}
```