/** Subtracting pointers */
#include <iostream>
using namespace std;

int main()
{
    int v[] = {2, 4, 6, 8, 12, 0};
    int *vPtr = &v[0];
    int *vPtr2 = &v[3];

    cout << vPtr2 - vPtr << endl;   // prints 3

    return 0;
}