Writing and reading PLY files

sm_ply.cpp

#include <CGAL/Simple_cartesian.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/boost/graph/IO/PLY.h>
#include <CGAL/Surface_mesh/IO/PLY.h>
#include <CGAL/boost/graph/generators.h>
#include <CGAL/IO/Color.h>

#include <iostream>
#include <fstream>

typedef CGAL::Simple_cartesian<double> K;
typedef K::Point_3 Point_3;
typedef CGAL::Surface_mesh<Point_3> Mesh;
typedef boost::graph_traits<Mesh>::face_descriptor face_descriptor;
typedef CGAL::IO::Color Color;


int main()
{
  {
    Mesh m;
    Mesh::Property_map<face_descriptor,Color> color;
    bool created;
    boost::tie(color, created) = m.add_property_map<face_descriptor,Color>("f:color",Color());
    assert(created);

    CGAL::make_triangle(Point_3(0,0,0), Point_3(1,0,0), Point_3(0,1,0),m);
    face_descriptor fd = *faces(m).begin();
    Color red(255,0,0);
    put(color,fd,red);

    std::ofstream out("m.ply");
    CGAL::IO::write_PLY(out, m);
    out.close();
  }
  {
    Mesh m;
    std::ifstream in("m.ply");
    CGAL::IO::read_PLY(in, m);
    in.close();

    std::cout << m << std::endl;
  }
  return 0;
}

And it also works when I write/read a binary ply.