c++ 类中常量成员，和引用成员初始化

/*******************************************************
*author：彭晓林
*copyright: 版权所有，翻版不究
*function: 类成员常量和引用的初始化示例
******************************************************/

#include <iostream>
#include <string>

using namespace std;

class DEMO
{
public:
DEMO (int a, int b):x(1), y(z), z(b)
{
cout<<"构造函数被调用：/n";
cout<<"x = "<< x<<endl;
cout<<"y = "<< y <<endl;
cout<<"z = "<< z <<endl;
}
private:
const int x;
int z;
int &y;
};

int main()
{
DEMO *p = new DEMO(1,2);

delete p;

while(1);
}