Circular Array

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n, i, index;
    cout << "Enter Array Size :: ";
    cin >> n;

    int a[n], b[2*n];

    cout << "\nEnter Array Element :: ";
    for(i=0; i<n; i++)
        cin >> a[i];

    for(i=0; i<n; i++)
    {
        b[i] = a[i];
        b[n+i] = a[i];
    }

    cout << "\nEnter Index Where From Print :: ";
    cin >> index;

    cout << "\nArray Are :: ";
    for(i=index; i<n+index; i++)
        cout << b[i] << " ";
    cout << "\n";

    cout << "\nAnother Way Array Are :: ";
    for(i=index; i<n+index; i++)
        cout << a[i%n] << " ";
    cout << "\n";

    return 0;
}