作者ric2k1 (Ric)
看板EE_DSnP
标题Re: [问题] 关於virtual function
时间Wed Nov 15 21:11:07 2006
※ 引述《old000 (千)》之铭言：
: 假设 class B 是继承 class A
: 那如果 A 里面的 virtual function
: 在 B 里面没有被implement
: 这样compile会过吗？
像这样...
#include <iostream>
using namespace std;
class Base {
public:
virtual void f() { cout << "Base::f()" << endl; }
void g() { cout << "Base::g()" << endl; }
virtual void h() { cout << "Base::h()" << endl; }
};
class Derived: public Base {
public:
void f() { cout << "Derived::f()" << endl; }
void g() { cout << "Derived::g()" << endl; }
};
int
main()
{
Base *p = new Derived;
p->f();
p->g();
p->h();
Base *q = new Base;
q->f();
q->g();
q->h();
Derived *r = new Derived;
r->f();
r->g();
r->h();
}
--
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1F：推 old000:天啊 谢谢老师！<(_._)> 11/15 22:06