#include <iostream>

int main(int argc, char** argv)
{
  int* x = new int[10];

  for (int i = 0 ; i < 10 ; ++i)
  {
    x[i] = i*7;
    std::cout << "x[" << i << "] = " << x[i] << std::endl;
  }

  // this will make y point to x[7]
  // the same would be true regardless of sizeof(x[0])
  int* y = x + 7;

  std::cout << "y = x + 7 = " << *y << std::endl;

  // this will make z point to x[5]
  int* z = y - 2;

  std::cout << "z = y - 2 = " << *z << std::endl;

  // integral value of the difference of the indices into the array
  // x[7] - x[5] = 2
  ptrdiff_t pdiff = y - z;

  std::cout << "y - z = " << pdiff << std::endl;

  return 0;
}