c++ private 类成员初始化顺序测试程序

/*******************************************************
*author：彭晓林
*copyright: 版权所有，翻版不究
*function: 类参数构造顺序，析构顺序参数测试
******************************************************/

#include <iostream>
#include <string>

using namespace std;

class DEMO
{
public:
DEMO (int a){cout<<"调用构造函数："<<a<<endl; x = a;}
~DEMO(){cout<<"调用析构函数"<<x<<endl;}
private:
int x;
};

class SUM
{
public:
SUM(int a, int b):y(a),x(b)
{

cout<<"SUM constractor"<<endl;
}

void print();
private:
DEMO x;
DEMO y;
};

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

delete p;

while(1);
}s