c++ 질문입니다.

#include <iostream>
 
#include<iostream>
#include<cstdlib>
 
using namespace std;
 
class Array1D
{
private:
	int* arr1;
	int len1;
public:
	Array1D(int n = 0) : len1(n)
	{
	}
	int& operator[](int index)
	{
		if (0 <= index && index < len1)
		{
			return *(&arr1[ index]);
		}
		else
		{
			cout < < "Out of index range" < < endl;
			exit(0);
		}
	}
	int Getlen()
	{
		return len1;
	}
	void Setlen(int n)
	{
		len1 = n;
		arr1 = new int[n];
		printf("this              %x    ", this);
		printf("생성자1 arr1   :  ");
 
		for (int i=0; i<n; i++)
		{
			printf("%x ", &arr1[ i]);
		}
		printf("\n");
	}
	~Array1D()
	{
		cout < < "소멸자1 Array1" < < endl;
		delete[]arr1;
	}
};
 
 
class Array2D
{
private:
	Array1D* arr2;
	int len;
public:
	Array2D(int n1, int n2) :len(n1)
	{
		arr2 = new Array1D[n1];
 
		printf("this2             %x    \n", this);
		printf("생성자2 arr2[]  : %x  %x\n", arr2, &arr2[1]);
		printf("생성자2 arr2    : %x  %x\n", arr2+0, arr2+1);
 
 
		for (int i=0; i<n1; i++)
		{
			Array1D * p = (Array1D*) &arr2[ i];
			p->Setlen(n2);
		}
 
#if 0
		//이건 하나씩 생성하려고 했는데 실패.
		for (int i=0; i<n1; i++)
		{
			Array1D * p = (Array1D*) &arr2[ i];
			for(int j=0; j<n2; j++)
			{
				p->Setlen(n2);
			}
		}
#endif
	}
	Array1D& operator[](int index)
	{
		if (0 <= index && index < len)
		{
			return arr2[ index];
		}
		else
		{
			cout < < "Out of index range" < < endl;
			exit(0);
		}
	}
	int Getlen()
	{
		return len;
	}
	~Array2D()
	{
		cout < < "소멸자2 Array2" < < endl;
		delete[]arr2;
	}
};
 
 
int MAX_X = 2;
int MAX_Y = 4; 
 
int main(int argc, char** argv) 
{
	Array2D arr(MAX_X, MAX_Y);
 
 
	int cnt=0; 
	for (int k = 0; k < MAX_X; k++)
	{
		for (int p = 0; p < MAX_Y; p++)
		{
			printf("-  k:%d   p:%d   cnt:%d       ", k, p, cnt);
			arr[k][p] = cnt;
//			arr[k] = Array1D(2);
			printf("main    %x  %x  %d", &arr[k], &arr[k][p], arr[k][p]);
			printf("=\n");
			cnt++;
		}
	}
 
	printf("------------------------------------\n");
	printf("printf   arr[1][1]   :  %d\n", arr[1][1] );
	cout< < "cout     arr[1][1]   :  " < < arr[1][1] < < endl;
	printf("------------------------------------\n");
 
 
	return 0;
}
 
 
 
 
#if 0
 
 
--------------------------------
2, 4 로 생성 
--------------------------------
 
this2             22febc
생성자2 arr2[]  : 3d3f0c  3d3f14
생성자2 arr2    : 3d3f0c  3d3f14
this              3d3f0c    생성자1 arr1   :  3d3a48 3d3a4c 3d3a50 3d3a54
this              3d3f14    생성자1 arr1   :  3d3a98 3d3a9c 3d3aa0 3d3aa4
-  k:0   p:0   cnt:0       main    3d3f0c  3d3a48  0=
-  k:0   p:1   cnt:1       main    3d3f0c  3d3a4c  1=
-  k:0   p:2   cnt:2       main    3d3f0c  3d3a50  2=
-  k:0   p:3   cnt:3       main    3d3f0c  3d3a54  3=
-  k:1   p:0   cnt:4       main    3d3f14  3d3a98  4=
-  k:1   p:1   cnt:5       main    3d3f14  3d3a9c  5=
-  k:1   p:2   cnt:6       main    3d3f14  3d3aa0  6=
-  k:1   p:3   cnt:7       main    3d3f14  3d3aa4  7=
------------------------------------
printf   arr[1][1]   :  5
cout     arr[1][1]   :  5
------------------------------------
소멸자2 Array2
소멸자1 Array1
소멸자1 Array1
 
--------------------------------
Process exited after 0.2562 seconds with return value 0
계속하려면 아무 키나 누르십시오 . . .
 
 
 
--------------------------------
4, 2 로 생성 
--------------------------------
 
this2             22febc
생성자2 arr2[]  : 3d3f0c  3d3f14
생성자2 arr2    : 3d3f0c  3d3f14
this              3d3f0c    생성자1 arr1   :  3d3f38 3d3f3c
this              3d3f14    생성자1 arr1   :  3d3f48 3d3f4c
this              3d3f1c    생성자1 arr1   :  3d3f58 3d3f5c
this              3d3f24    생성자1 arr1   :  3d3f68 3d3f6c
-  k:0   p:0   cnt:0       main    3d3f0c  3d3f38  0=
-  k:0   p:1   cnt:1       main    3d3f0c  3d3f3c  1=
-  k:1   p:0   cnt:2       main    3d3f14  3d3f48  2=
-  k:1   p:1   cnt:3       main    3d3f14  3d3f4c  3=
-  k:2   p:0   cnt:4       main    3d3f1c  3d3f58  4=
-  k:2   p:1   cnt:5       main    3d3f1c  3d3f5c  5=
-  k:3   p:0   cnt:6       main    3d3f24  3d3f68  6=
-  k:3   p:1   cnt:7       main    3d3f24  3d3f6c  7=
------------------------------------
printf   arr[1][1]   :  3
cout     arr[1][1]   :  3
------------------------------------
소멸자2 Array2
소멸자1 Array1
소멸자1 Array1
소멸자1 Array1
소멸자1 Array1
 
--------------------------------
Process exited after 0.6227 seconds with return value 0
계속하려면 아무 키나 누르십시오 . . .
 
#endif