关于delete 和new 的问题

He2toN

#include<iostream>
#include<string>
using namespace std;
class Pet
{
public:
Pet(std::string theName);
~Pet();
void eat();
void sleep();
virtual void play()=0;                       
protected:
std::string name;

};
class Cat:public Pet
{
public:
Cat(std::string theName);
~Cat();
void climb();
void play();
};
class Dog:public Pet
{
public:
Dog(std::string theName);
~Dog();
void bark();
void play();

};
Pet::Pet(std::string theName)
{
name=theName;
}
void Pet::eat()
{
std::cout<<name<<"正在吃东西!\n";
}
void Pet::sleep()
{
std::cout<<name<<"正在睡觉!\n";
}
/*void Pet::play()
{
std::cout<<name<<"正在玩耍!\n";
}*/
Cat::Cat(std::string theName):Pet(theName)
{

}
void Cat::climb()
{
std::cout<<name<<"正在爬树!\n";
}
void Cat::play()
{
//Pet::play();                  
std::cout<<name<<"玩毛线球！\n";
}
Dog::Dog(std::string theName):Pet(theName)
{

}
void Dog::bark()
{
std::cout<<name<<"正在大叫!\n";
}
void Dog::play()
{
//Pet::play();
std::cout<<name<<"正在玩骨头!\n";
}
int main()
{
Pet *cat=new Cat("加菲");
                           
Pet *dog=new Dog("欧迪");
cat->sleep();
cat->eat();
cat->play();

dog->sleep();
dog->eat();
dog->play();
delete cat;          //这里问什么不能delete 啊？加上这两句delete 就过不了， 不加就过了
delete dog;
while(1);
return 0;
}

我是师兄

你没有定义析构函数

He2toN

嗯。。昨天晚上自己解决了。。。