multiinh.cpp

C++Builder高级应用开发指南随书源码

//---------------------------------------------------------------------------
#include <iostream>
#include <typeinfo.h>
#pragma hdrstop

//---------------------------------------------------------------------------

#pragma argsused
class d1{
public:
    virtual void foo(){}
};
class d2{
public:
    virtual void bar(){}
};
class mi:public d1, public d2 {};
class mi2:public mi{};
int main(int argc, char* argv[])
{
    using namespace std;
    
    d2 * D2 =new mi2;
    mi2 * MI2 = dynamic_cast<mi2 *>(D2);
    if(MI2) cout<<"MI2 Succeed!"<<endl;
    d1 * D1 = dynamic_cast<d1 *>(D2);
    if(D1) cout<<"D1 Succeed!"<<endl;
    if(typeid(*D2)==typeid(mi2))
        cout<<"typeid to mi2 Succeed"<<endl;
    else if(typeid(*D2)==typeid(mi))
        cout<<"typeid to mi Succeed"<<endl;
    else if(typeid(*D2)==typeid(d2))
        cout<<"typeid to d2 Succeed"<<endl;
    char c;
    cin >> c;
    return 0;
}
//---------------------------------------------------------------------------