#include?<iostream>
#include?<cstdlib>
#include?<ctime>
#include?<typeinfo>
using?namespace?std;
class?Grand
{
private:
int?hold;
public:
Grand(int?h?=?0)?:hold(h){}
virtual?void?Speak()?const{?cout?<<?"I?am?a?grand?class!\n";?}
virtual?int?Value()?const{?return?hold;?}
};
class?Superb?:public?Grand
{
public:
Superb(int?h?=?0)?:Grand(h){}
void?Speak()?const{?cout?<<?"I?am?a?superb?class!!\n";?}
virtual?void?Say()?const
{
cout?<<?"I?hold?the?superb?value?of?"?<<?Value()?<<?"!\n";
}
};
class?Magnificent?:public?Superb
{
private:
char?ch;
public:
Magnificent(int?h?=?0,?char?cv?=?'A')?:Superb(h),?ch(cv){}
void?Speak()?const{?cout?<<?"I?am?a?magnificent?class!!!\n";?}
void?Say()?const{
cout?<<?"I?hold?the?character?"?<<?ch?<<
"?and?the?integer?"?<<?Value()?<<?"!\n";
}
};
Grand?*?GetOne();
int?main()
{
srand(time(0));
Grand?*?pg;
Superb?*?ps;
for?(int?i?=?0;?i?<?5;?i++)
{
pg?=?GetOne();
cout?<<?"Now?processing?type?"?<<?typeid(*pg).name()?<<?".\n";
pg->Speak();
if?(ps?=?dynamic_cast<Superb?*>(pg))
ps->Say();
if?(typeid(Magnificent)?==?typeid(*pg))
cout?<<?"Yes,?you're?really?magnificent.\n";
}
return?0;
}
Grand?*?GetOne()
{
Grand?*?p;
switch?(rand()?%?3)
{
case?0:?p?=?new?Grand(rand()?%?100);
break;
case?1:?p?=?new?Superb(rand()?%?100);
break;
case?2:?p?=?new?Magnificent(rand()?%?100,?'A'?+?rand()?%?26);
break;
}
return?p;
}
有什么問題？就是運(yùn)行不了
慕田峪3750655
2016-09-27 14:45:47
