Error

[tuandt5]

I'm trying find error in this program,but i haven't found.
please help me
find and correct it,and rewrite DoSort function of

Class Seclection

to sort decrease
thanks a lot

class Vect
{
protected:
	int size;
	double *data;
public:
	Vect(): size(0), data(NULL) {}
	Vect(int sz): size(sz) { data = new double[size]; }
	Vect(double *v, int sz): size(sz), data(*v) {}
	Vect(int sz, const double *v)
		{
			size = sz;
			data = new double[size];
			for (int i = 0; i < size; i++)
				data[i] = v[i];
		}
	~Vect() { if (data) delete[] data; }
public:
	int GetSize() { return size; }
	double& operator[](int index) { return data[index]; }
};

class Sort: public Vect
{
public:
	Sort(int sz, const double *v): Vect(sz, v) {}
protected:
	void Swap(int i, int j) { double t = data[i]; data[i] = data[j]; data[j] = t; }
	virtual Sort& DoSort() = 0;
	void Print(ostream& out)
		{
			for (int i = 0; i < size; i++)
				out << ' ' << data[i];
		}
	friend ostream& operator<<(ostream& out, Sort & v)
		{
			out << "original:";
			v.Print(out);
			out << "\nsorted:";
			v.DoSort().Print(out);
			return (out);
		}
};

class SelectionSort: public Sort
{
public:
	SelectionSort(int sz, const double *v): Sort(sz, v)

private:
	Sort& DoSort()
	{
		return (*this);
	}
};

void main()
{
	double a[] = {1, 3, 5, 2, 4};
	cout << new SelectionSort(4, A) << endl;
}

[jimc]

Okay, so your assignment is to find the error and implement the DoSort function. So go ahead and attempt to do that, and if you have more specific questions, come back and ask. I would hope that no one here is just going to do your assignment for you. I am curious as to whether your instructor thinks this is good code or not.