#include <iostream>
	#include <assert.h>
	using namespace std;
	
	Baby* baby = new Baby();
	
	// Thanks birth-given from my great Mom
	assert(baby != NULL);
	baby.birthDate = Date("1991","07","02");
	baby.birthPlace = Place("China", "Anhui", "Huaibei");
	
	if(baby.isBoy())
	{
	  baby.firstName = "Yubo";
	  baby.LastName = "Li";
	}
	else
	{
	  // God knows~
	}	
	Sleep(1000 * 60 * 60 * 24 * 365 * 18)

	Person *YL = new Male(baby);
	YL.height = Height("180", "cm");
	YL.weight = Weight("80", "kg");

	cout << "to be continued..." << endl;