#include using namespace std; class Base1 { //基类Base1,构造函数有参数 public: Base1(int i) { cout << "Constructing Base1 " << i << endl; } ~Base1() { cout << "Destructing Base1" << endl; }}; class Base2 { //基类Base2,构造函数有参数 public: Base2(int j) { cout << "Constructing Base2 " << j << endl; } ~Base2() { cout << "Destructing Base2" << endl; }}; class Base3 { //基类Base3,构造函数无参数 public: Base3() { cout << "Constructing Base3 *" << endl; } ~Base3() { cout << "Destructing Base3" << endl; }}; class Derived: public Base2, public Base1, public Base3 { //派生新类Derived,注意基类名的顺序 public: //派生类的公有成员 Derived(int a, int b, int c, int d): Base1(a), member2(d), member1(c), Base2(b) { } //注意基类名的个数与顺序,注意成员对象名的个数与顺序 private: //派生类的私有成员对象 Base1 member1; Base2 member2; Base3 member3;}; int main() { Derived obj(1, 2, 3, 4); return 0;}