Is it possible to have an array with int values and int references?

Question

Is it possible to have an array with int values and int references?

Is there any other way to have an array arr such that when you print arr[1] it always prints the value of arr[0] (without having to update arr[1] when arr[0] is modified) ?

Answer 1

No , but you may have such a desired array:

#include <iostream>
using namespace std;

class CIntRef
{
public:
    CIntRef(const int & ref) : ref(ref) {}
    operator const int &() { return ref; }
    const int& operator=(const int &i) {
        const_cast<int&>(ref) = i;
        return ref;
    }
private:
    const int & ref;
};

int main()
{
    int a = 2;
    CIntRef arr[] = { a, a, 0, 1 };
    cout << arr[1] << endl; // <-- prints: 2
    arr[0] = 3;
    cout << arr[1] << endl; // <-- prints: 3
    return 0;
}