#include <iostream>

using namespace std;

class Array
{

public:

    int *ptr;
    int one,two;
    Array(int arr[])
    :
        one(0), two(0)
    {
        ptr=arr;
    }


    int &operator[](int index)
    {
        one=index;
        return ptr[index];
    }
    Array & operator=(int x){
        two=x;
        return *this;
    }
};

std::ostream& operator<<(std::ostream& stream, const Array& array)
{
	stream << "( " << array.one << ", " << array.two << ": ";
	if (array.ptr) 
	  stream << *(array.ptr);
	stream << ")";
	return stream;
}

int main(void)
{
    int y[]={1,2,3,4};
    Array x(y);
    cout << "Before assigning one element: " << x << endl;
    x[1]=5;
    cout << "After  assigning one element: " << x << endl;
    x = 7;
    cout << "After  operator=:             " << x << endl;
}

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