#include <iostream>

class A;
class B;

class A
{
	private:
		int value_;
	public:
		A():
		value_(24)
		{
		}
		void showValue(void);
};

class B
{
	private:
		void (A::*pFunction)(void);
	public:
		void getFunction(void (A::*pointerToFunction)(void))
		{
			pFunction = pointerToFunction;
		}
		void useFunction(void)
		{
			pFunction;
		}
};

int main(void)
{
	A a;
	B b;

	b.getFunction(a.showValue);
	b.useFunction();
}