/* Code for exercise 12.9. |  | "C++ Solutions--Companion to The C++ Programming Language, Third Edition" | by David Vandevoorde; Addison-Wesley 1998; ISBN 0-201-30965-3. | | Permission to use, copy, modify, distribute and sell this software | and its documentation for any purpose is hereby granted without fee. | The author makes no representations about the suitability of this | software for any purpose.  It is provided "as is" without express or | implied warranty. `----------------------------------------------------------------------*/#include <iostream.h>#include <new>class Char_vec {   int sz;   char element[1];public:   static Char_vec* new_char_vec(int s);   char& operator[](int i) { return element[i]; }   // ...};Char_vec* Char_vec::new_char_vec(int s) {   char *rawbytes = (char*)::operator new(sizeof(Char_vec)+s-1);   Char_vec *vec = new(rawbytes) Char_vec;   vec->sz = s;   return vec;};int main() {   int const N = 100;   Char_vec &chv = *Char_vec::new_char_vec(N);   for (int k1 = 0; k1!=N; ++k1) {      chv[k1] = (char)k1;   }   for (int k2 = 0; k2!=N; ++k2) {      if (chv[k2]!=k2) {         std::cout << "Something is very wrong with this Char_vec!\n";         return 1;      }   }   std::cout << "Successfully filled Char_vec with values.\n";   return 0;}