include <PointerBool.h>
  include <SpreadsheetCell.h>
  
  include <iostream>
  using namespace std;
  
  int main(int argc, char** argv)
  {
    Pointer<SpreadsheetCell> smartCell(new SpreadsheetCell);
    smartCell->set(5);
    if (smartCell != NULL) {
      cout << "not NULL!\n";
    }
    if (smartCell) {
      cout << "not NULL!\n";
    }
    if (!smartCell) {
      cout << "NULL\n";
    }
  
    return (0);
  }