虚函数中构造函数的调用顺序

/*曾经有段时间一直被构造函数中的虚函数所困扰，现在通过自己重新学习了一遍，标注一下容易忘记的知识*/
#include<iostream>
using namespace std;
class Base0
{
  public:
   Base0(int var):var0(var)
   {
       cout<<"Construct base0"<<endl;
   } ;
   int var0;
   void fun()
   {
       cout<<"Menber of Base0"<<endl;
   }

};
class Base1 :virtual public Base0
{
    public:
    Base1(int var)  :Base0(var)
    {
           cout<<"Construct base1"<<endl;
    }
    int var1 ;
};
class Base2 : virtual public Base0
{
    public :
    Base2(int var): Base0(var)
    {
           cout<<"Construct base2"<<endl;
    }
    int var;
};
class Derived : public Base2,public Base1  //构造函数的执行顺序与这儿有关
{
    public :
    Derived(int var) : Base2(var),Base1(var),Base0(var)
    {
           cout<<"Construct Derived"<<endl;
    }
    int var;
    void fun()
    {
        cout<<"Member of Derived"<<endl;
    }
};
int main()
{
  Derived d(1);
  d.var=2;
  d.fun();
    return 0;
}