我不过是声名一个数组,有什么错

可以了

完整的程序是这样的:
#include<iostream>
class mammal
{public:
mammal():itsage(1){cout<<"mammal constructor....."<<endl;}
virtual ~mammal(){cout<<"mammal destructor...."<<endl;}
mammal(const mammal & rhs);
virtual void speak()const{cout<<"mammal speak!";}
virtual mammal * clone(){return new mammal(*this);}
int getage()const{return itsage;}
protected:
int itsage;
};
mammal::mammal(const mammal & rhs):itsage(rhs.getage()){cout<<"mammal copy constructor..."<<endl;}
class dog:public mammal
{public:
dog(){cout<<"dog constructor.....";}
virtual ~dog(){cout<<"dog destructor...";}
dog (const dog & rhs);
void speak()const{cout<<"woof!";}
virtual mammal * clone(){return new dog(*this);}
};
dog::dog(const dog & rhs):mammal(rhs){cout<<"dog copy constructor....";}
class cat:public mammal
{public:
cat(){cout<<"cat constructor....";}
~cat(){cout<<"cat destructor....";}
cat(const cat &);
void speak()const{cout<<"meow!";}
virtual mammal * clone(){return new cat(*this);}

};
cat::cat(const cat & rhs):mammal(rhs){cout<<"cat copy constructor....";}
enum ANIMALS{mammal,dog,cat};
const int numanimaltype=3;
int main()
{mammal * thearray[numanimaltype];
mammal * ptr;
int choice,i;
for(i=0;i<numanimaltype;i++)
{cout<<"(1)dog (2)cat (3)mammal :";
cin>>choice;
switch(choice)
{case dog: ptr = new dog;
break;
case cat: ptr = new cat;
break;
default: ptr=new mammal;
break;
}
thearray[i]=ptr;}
mammal * otherarray[numanimaltype];
for(i=0;i<numanimaltype;i++)
{thearray[i]->speak();
otherarray[i]=thearray[i]->clone();}
for(i=0;i<numanimaltype;i++)
otherarray[i]->speak();
return 0;
}
有不少错误.