Copy Constructor Failing

[AnonymousAccount]

In my program, I have created an array class.
However, even though I have a deep copy constructor, it only works for the first element of the actual array. Please help.

#include <iostream>

using namespace std;

class INTARR
{
public:
	INTARR(int s);
	INTARR(INTARR& a);
	~INTARR();
	int& operator[](int index);
	INTARR operator=(INTARR a);
	INTARR operator+(INTARR b);
	int GetSize() {return(size);}
private:
	int* arr;
	int size;
};

int main()
{
	INTARR c(3);
	c[0] = 1;
	c[1] = 2;
	c[2] = 3;

	INTARR d(3);
	d = c;

	cin.get();

	return 0;
}

INTARR::INTARR(int s)
{
	arr = new int[s];
	size = s;
}
INTARR::INTARR(INTARR& a)
{
	arr = new int[a.size];
	*arr = *(a.arr);
	size = a.size;
}
INTARR::~INTARR()
{
	delete[] arr;
}
int& INTARR::operator[](int index)
{
	if ((index < size) && ( index >= 0))
		return arr[index];
	else
		return arr[0];
}
INTARR INTARR::operator=(INTARR a)
{
	for (int i = 0; i < a.size; i++)
	{
		(*this)[i] = a[i]; cout << "Size: " << a.size << " New Content: " << (*this)[i] << " Original Content: " << a[i] << endl;
	}
	return *this;
}

The output for both [1] and [2] of the arrays come out as some value that was present at that RAM Address.

Thank you.

[Danny Toledo]

Remember, arr is a pointer to the first element in the array, so *arr deferences that pointer and gives you the value stored in arr[0], same for *(a.arr).

Here is a modified version of your copy constructor:

INTARR::INTARR(INTARR& a)
{
	arr = new int[a.size];
	std::copy_n(a.arr, a.size, arr);
        size = a.size;
}

[AnonymousAccount]

Oh, right. That makes complete sense now...

Thanks for the help.