#include <iostream>
#include <cstdlib>
using namespace std;

class base {
public:
	void f(int i) const {cout << i << "\n";}                //Print in decimal.
};

class derived: public base {
public:
	void f(int i) const {base::f(i);}                       //call-through
	void f(char c) const {cout << "'" << c << "'" << "\n";} //Print a character.
};

int main()
{
	derived d;
	d.f('A');   //Calls the derived::f in line 13.
	d.f(66);    //Calls the derived::f in line 12, which calls base::f.
	return EXIT_SUCCESS;
}