extern "C" {
 #include <stdio.h>
 #include <stdlib.h>
}

class Array {
  protected:
    int* body;
    int last_index;

  public:
    Array(int k) {     //constructor
      body = new int[k];
      last_index = k-1;
    }//end constructor

    //destructor
    ~Array() { if (body) delete[] body; body=0; last_index=-1; }

    //subscript operator
    int& operator[] (int i) {
      if (i < 0 || i > last_index)  // index is out of range
        exit(1);                    // exit or throw an appropriate 
                                    // exception or take an appropriate action
      return body[i];
    }//end subscript operator
};//end class Array


// function main -----------------------------------------------
int main()
{
   Array x(4);

   x[0] = 1;
   printf("%d\n",x[0]);
   return 0;
}//end main