#include <iostream>
using namespace std;
class employee{
public:
??? virtual void salary(){
?? ??? ?cout<<"employee salary"<<endl;
?? ?}
};
class programmer:public employee{
public:
?? ?void salary()
?? ?{
?? ?? cout<<"programmer salary"<<endl;
?? ?}
?? ?void bonus()
?? ?{
?? ??? cout<<"programmer bonus"<<endl;
?? ?}
};
void payroll(employee *pe)
{
?? programmer *pm=dynamic_cast<programmer*>(pe);
?? if(pe)
?? {
?? ??? pm->bonus();
?? }
?? else
?? {
?? ??? pe->salary();
?? }
}
int main()
{
?? employee *pe=new programmer;
?? payroll(pe);
}
在VC下運(yùn)行，總是拋出異常。
project--> ? C/C++-->project ? option ? 加上/GR
靠RTTI實(shí)現(xiàn)的,不過VC默認(rèn)情況下是關(guān)掉了RTTI的,因?yàn)镽TTI會有運(yùn)行時的消耗，
影響效率......