qfedu-cpp-level/day5/homework/h5.cpp

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// 假设有三个类Animal动物Mammal哺乳动物和 Dog。Animal 类具有一个成员函数 eat() 用于输出动物吃的食物。Mammal 类继承自 Animal 类,并添加了一个成员函数 giveBirth() 用于输出哺乳动物的生育方式。Dog 类继承自 Mammal 类,并添加了一个成员函数 bark() ,用于输出狗的叫声。请在给定的类定义中完成代码,并实现相应的成员函数。
#include <iostream>
#include <cstring>
#include <cstdlib>
using namespace std;
class Animal
{
public:
void eat()
{
cout << "Animal eat" << endl;
}
};
class Mammal : public Animal
{
public:
void giveBirth()
{
cout << "Mammal give birth" << endl;
}
};
class Dog : public Mammal
{
public:
void bark()
{
cout << "Dog bark" << endl;
}
};
int main()
{
Dog dog;
dog.eat(); // Animal eat
dog.giveBirth(); // Mammal give birth
dog.bark(); // Dog bark
return 0;
}