多重继承与内嵌对象

#include <iostream>using namespace std;class Base1{public:Base1(int i) { cout << "Base1 constructor called " << i << endl; }~Base1() { cout << "Base1 destructor called" << endl; }};class Base2{public:Base2(int i) { cout << "Base2 constructor called " << i << endl; }~Base2() { cout << "Base2 destructor called" << endl; }};class Base3{public:Base3(int i) { cout << "Base3 constructor called " << i << endl; }~Base3() { cout << "Base3 destructor called" << endl; }};class Derived :public Base2, public Base1, public Base3{Base3 member3; Base1 member1; Base2 member2;public:Derived(int a, int b, int c, int d, int e, int f, int g) :Base1(b), Base2(c), Base3(d), member1(e), member2(f), member3(g){cout << "Derived constructor called " << a << endl;}~Derived() { cout << "Derived destructor called" << endl; }};int main(){Derived objD(1, 2, 3, 4, 5, 6, 7);return 0;}