transform from C# to C++

aaa

(I realize that this conversion is not complete - you'll have to make some adjustments)

Code:

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using namespace System;

private ref class Program
{
private:
        value class Point
        {
        private:
                double X;
                double Y;

        public:
//C# TO C++ CONVERTER TODO TASK: Calls to same-class constructors are not supported in C++:
//ORIGINAL LINE: public Point(double x, double y) : this()
                Point(double x, double y)
                {
                        X = x;
                        Y = y;
                }

                double DistanceFrom(Point other)
                {
                        return Math::Sqrt(Math::Pow(X - other.X, 2) + Math::Pow(Y - other.Y, 2));
                }

                static Point FromLine(String ^line)
                {
                        array<String^> ^parts = line->Split(' ');
                        return Point(double::Parse(parts[0]), double::Parse(parts[1]));
                }

                virtual String ^ToString() override
                {
                        return "(" + X + "," + Y + ")";
                }
        };

        static void Main(array<String^> ^args)
        {
                TextReader ^reader = gcnew StreamReader("..\\CatAndDog.dat");

                Point cat = Point::FromLine(reader->ReadLine());
                Point dog = Point::FromLine(reader->ReadLine());

                int numTrees = int::Parse(reader->ReadLine());
                array<Point> ^trees = gcnew array<Point>(numTrees);
                for (int i = 0; i < numTrees; ++i)
                        trees[i] = Point::FromLine(reader->ReadLine());
                reader->Close();

                Console::WriteLine("Cat is at: {0}", cat);
                Console::WriteLine("Dog is at: {0}", dog);
                Console::Write("There are {0} trees:", trees->Length);
                for each (Point tree in trees)
                        Console::Write(" {0}", tree);
                Console::WriteLine();

                Point closestTree = trees->OrderBy([&] (Object ^t)
                {
                        t::DistanceFrom(cat);
                }).First();
                Console::WriteLine("The closest tree to the cat is: {0}", closestTree);
                Console::WriteLine("The dog is {0} units from the cat.", dog.DistanceFrom(cat));
                Console::WriteLine("The cat is {0} units from the closest tree.", cat.DistanceFrom(closestTree));
                Console::WriteLine("The cat will{0} escape from the dog.", (cat.DistanceFrom(closestTree) * 2 < dog.DistanceFrom(cat)) ? "" : " not");
        }
};

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