//---------main.cpp------------
#include <iostream>
#include <string>


using namespace std;
class StudentID
{
private:
	int value;
public:
	StudentID()
	{
		static int nextStudentID = 0;           //很巧妙的利用了建構函式  注意建構函式的執行順序
		nextStudentID++;
		value = nextStudentID;
		std::cout<<"Assigning student ID is  :"<<value<<endl;
	}
};
class Student
{
private:
	string name;
	StudentID id;
public:
	Student(string n = "noNanme")
	{
		std::cout<<"Constructing student "<<n<<endl;
		name = n;
	}
};
int main(int argc,char **argv)
{
	Student a("Jeck");
	return 0;
}