#include <iostream>

using namespace std;

class Counter

{

public:

Counter(int );

Counter operator ++();

Counter operator --();

void display();

private:

int i;

};

Counter::Counter(int a)

{

i=a;

}

void Counter::display()

{

cout<<i;

}

Counter Counter:: operator ++()

{

return Counter (++i);

}

Counter Counter:: operator --()

{

return Counter(--i);

}

int main()

{

Counter C1(5);

cout<<"C1=";C1.display();

++C1;

cout<<endl<<"C1=";C1.display();

--C1;

cout<<endl<<"C1=";C1.display();

cout<<endl;

return 0;

}