#include <iostream> 

int main(int argc, char** argv) 
{ 
  double array[4] = {1.2, 2.4, 3.6, 4.8};

  // declare a reference to an array
  double (&ary_ref)[4] = array;

  // use the reference -- 6.0
  std::cout << ary_ref[1] + ary_ref[2] << std::endl;

  int twod[3][2] = { {10, 11}, {12, 13}, {14, 15} };

  // declare a reference to a 2-d array
  int (&td_ref)[3][2] = twod;

  // use the reference -- 25
  std::cout << td_ref[2][0] + td_ref [0][1] << std::endl;

  double* dp = &array[2];
  
  // declare a reference to a pointer
  double*& refp = dp;

  // use the reference to pointer
  std::cout << *refp << std::endl;

  // declare a pointer to an array
  int (*parray)[2] = twod;
  
  // declare a reference to a pointer to an array
  int (*&prarray)[2] = parray;

  // use the reference to pointer to array -- 15
  std::cout << prarray[2][1] << std::endl;

  return 0; 
}