题目内容
以下程序的执行结果是______.
include<<iostream.h>
c1ass A
{
public:
virtual void funl () { cout<<"A fun1"<<endl;}
virtual void fun2 () {cout<<"A fun2"<<endl;
void fun3 () {cout<<" A fun 3 "<<endl:)
void fun4 () {cout<<" A fun4 "<<endl:}
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