多态 Poly
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#include<iostream>
using namespace std;
class A
{
public:
virtual void fun1(); //纯虚函数?
void fun2(){fun1();}
};
void A::fun1()
{
cout<<"A::fun1 was called."<<endl;
}
//inherit
class B : public A
{
public:
void fun1();
};
void B::fun1()
{
cout<<"B::fun1 was called."<<endl;
}
int main() //template designed model
{
A aa;
aa.fun2();
A *a=new B;
a->fun2();
B b;
b.fun2();
A *bb=new A;
bb->fun2();
delete bb;
delete a;
return 0;
using namespace std;
class A
{
public:
virtual void fun1(); //纯虚函数?
void fun2(){fun1();}
};
void A::fun1()
{
cout<<"A::fun1 was called."<<endl;
}
//inherit
class B : public A
{
public:
void fun1();
};
void B::fun1()
{
cout<<"B::fun1 was called."<<endl;
}
int main() //template designed model
{
A aa;
aa.fun2();
A *a=new B;
a->fun2();
B b;
b.fun2();
A *bb=new A;
bb->fun2();
delete bb;
delete a;
return 0;
}
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