To implement a object as fstream with operator ! and open()

gistfile1.hpp

/* Usage: To implement a object as fstream with operator ! and open()
*  Author: Allen (allen501pc@hotmail.com)
*  Date: 04/14/2009
*  Output: 
*          object has been opened! 
*/

#include <iostream>
using namespace std;
class object
{
    private:
        bool isset;
        bool notopen;
    public:
        object()
        {
            isset=false;
            notopen=true; /* Set it is not opened! */
        }
        bool operator!(); /* ! operator for checking open or not */
        void open()
        {
            notopen=false; /* set it is opened */
        }
};
/* operator ! for checking that opened or not 
*  if open, return false
*  Or, return true
*/
bool object::operator!()
{
    return this->notopen;
}

int main(int argc,char * argv[])
{
    object ob; /* take class object as ob */
    ob.open(); /* open */
    if(!ob)
    {
        cout << "object has not been opened! " << endl;
    }
    else
        cout << "object has been opened! " << endl;
    return 0;
}