#include <iostream> using namespace std; class A { int a; public: A() {cout<<"Constructing A"<<endl;} }; class B { public: B() {cout<<"Constructing B"<<endl;} }; class B1:virtual B,virtual public A { public: B1(int i) {cout<<"Constructing B1"<<endl;} }; class B2:public A,virtual public B { public: B2(int j) {cout<<"Constructing B2"<<endl;} }; class D:public B1,public B2 { public: D(int m,int n):B1(m),B2(n) {cout<<"Constructing D"<<endl;} A a; }; void main() { D d(1,2); }
