int* a = new int[5]{0, 8, 7, 2, -1};
int* ptr = a;                           // pointer assignment
++ptr;                                  // shift to the right
int my_int = *ptr;                      // read target
ptr += 2;                               // shift by 2 elements
*ptr = 18;                              // overwrite target
int* past = a+5;
std::cout << (ptr < past) << "\n";      // compare pointers