Stroustrup 5.9, exercise 1

------ PROGRAMME -----------
/* Stroustrup, 5.9, exercises

to write some declarations (with initializers)
comments explain what we intend to do
*/

#include<iostream>

int main()
{

  // a pointer to a character
  char c1 = 'a';
  char* pc1 = &c1;

  // an array of 10 integers
  const int arr_size = 10;
  char arr_int[arr_size];

  // a reference to an array of 10 integers
  char& r_arr_int = arr_int;

  // a pointer to an array of character strings
  /* SORRY but i do not know how to present an array
   of character strings */

  // a pointer to a pointer to a char
  char c;
  char* pc = &c;
  char* ppc = pc;

  // a constant integer
  const int ci = 7;

  // a pointer to a constant integer
  const int* pci = &ci;

  // a constant pointer to an integer
  int j = 8;
  int *const cpi = &j;

  return 0;
}

--------- OUTPUT ---------------
[arch@voodo tc++pl]$ g++ 5.9_ex-01.cpp
5.9_ex-01.cpp: In function 'int main()':
5.9_ex-01.cpp:23: error: invalid initialization of non-const reference
of type 'char&' from a temporary of type 'char*'
[arch@voodo tc++pl]$
-----------------------------------

i did not use "-ansi -W" flags as they were emitting warnings i did
not need to correct at this moment. i know that this is an error:

 // a reference to an array of 10 integers
  char& r_arr_int = arr_int;

i dont find any way to create a reference to an integer. BTW, are all
declarations fine ?