Just open your c++ compiler Paste this code.
#include <iostream>
using namespace std;
////////////////////////////////////////////////////////////////
class Counter
{
private:
unsigned int count; //count
public:
Counter() : count(0) //constructor
{ }
unsigned int get_count() //return count
{ return count; }
void operator ++ () //increment (prefix)
{
++count;
}
};
////////////////////////////////////////////////////////////////
int main()
{
Counter c1, c2; //define and initialize
cout << "\nc1=" << c1.get_count(); //display
cout << "\nc2=" << c2.get_count();
++c1; //increment c1
++c2; //increment c2
++c2; //increment c2
cout << "\nc1=" << c1.get_count(); //display again
cout << "\nc2=" << c2.get_count() << endl;
return 0;
}