/** Pointer arithmetic. */
#include <iostream>
using namespace std;

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

    cout << *vPtr << endl;  // prints 2
    vPtr = vPtr + 3;        // vPtr now points to address vPtr + 3*sizeof(int),
                            // i.e., v[3]
    cout << *vPtr << endl;  // prints v[3]
    vPtr--;                 // vPtr now points to address vPtr - 1*sizeof(int),
                            // i.e., v[2]
    cout << *vPtr << endl;  // prints v[2]
    cout << *(vPtr + 2) << endl;  // prints v[4]

    return 0;
}