#include<iostream.h>
 #include<conio.h>

 /*************************************************************************///------------------------------  indes0  -------------------------------///*************************************************************************/class index0
    {
       protected:
        int count;

       public:
        index0()  { count=0; }
        index0(intvalue)  { count=value; }
        voidoperator++()  { ++count; }
        voidoperator++(int)  { count++; }
        void display()  { cout<<count<<endl; }
    };

 /*************************************************************************///------------------------------  index1  -------------------------------///*************************************************************************/class index1:public index0
    {
       public:
        index1()  { count=0; }
        index1(intvalue):index0(value)  { }
        voidoperator--()  { --count; }
        voidoperator--(int)  { count--; }
        void display()  { cout<<count<<endl; }
    };

 main()
    {
       clrscr();

       index1 i;
       index1 j(100);

       cout<<"\n Value of i before increment = ";
       i.display();

       i++;
       ++i;

       cout<<"\n Value of i after increment twice = ";
       i.display();

       i--;

       cout<<"\n Value of i after decrement = ";
       i.display();

       --i;

       cout<<"\n Value of i after decrement = ";
       i.display();

       cout<<"\n Value of j = ";
       j.display();

       getch();
       return 0;
    }