How to use a pointer to a member function of a class

#include <stdio.h>
#include <IOSTREAM>

class TestA
{
public:
	int __stdcall SayHello(int person);
};

int TestA::SayHello(int person)
{
	printf("hello world!%d",person);
	return 0;
}

int (__stdcall TestA::*CallSayHello)(int person);
typedef int (__stdcall TestA::*XSayHello)(int operation);

XSayHello hello;

int main()
{
	//(*CallSayHello)(1);
	//hello(1);
	system("pause");
	return 0;
}