虚基类由最终派生类初始

#include <iostream.h> class A { int a; public: A(int x) { a=x; cout<<"Virtual Base A..."<<endl; } }; class B:virtual public A { public: B(int i):A(i) { cout<<"Virtual Base B..."<<endl; } }; class C:virtual public A { int x; public: C(int i):A(i) { cout<<"Constructing C..."<<endl; } }; class ABC:public C,public B { public: ABC(int i,int j,int k):C(i),B(j),A(i) { cout<<"Constructing ABC..."<<endl; } }; void main() { ABC obj(1,2,3); }