类的继承2

#include<iostream>
using namespace std;
class Base1{
public:
Base1(int i){
cout<<"Constructing Base1"<<i<<endl;
}
Base1(){
cout<<"Constructing Base1"<<endl;
}
};
class Base2{
public:
Base2(int j){
cout<<"Constructing Base2"<<j<<endl;
}
Base2(){
cout<<"Constructing Base2"<<endl;
}
};
class Base3{
public:
Base3(){
cout<<"Constructing Base3 *"<<endl;
}
Base3(){
cout<<"Constructing Base3"<<endl;
}
};
class Derived:public Base2,public Base1,public Base3{
public:
Derived(int a,int b,int c,int d):Base1(a),member2(d),member1(c),Base2(b)
{}
private:
Base1 member1;
Base2 member2;
Base3 member3;
};
int main()
{
Derived obj(1,2,3,4);
return 0;
}