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最新推荐文章于 2024-04-23 16:00:27 发布

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最新推荐文章于 2024-04-23 16:00:27 发布

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文章标签： c++

本文链接：https://blog.youkuaiyun.com/m0_64212834/article/details/123565610

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这篇博客介绍了如何使用C++编程实现Mammal类及其派生类Dog，包括类的构造函数、访问器方法和其他特定方法。在Dog类中增加了颜色属性和相关操作，如WagTail()和BegForFood()。在主函数中展示了类的实例化和方法调用，输出了Dog实例的年龄和体重。

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补充程序：

1、实现Mammal类的方法

2、由Mammal类派生出Dog类，在Dog类中增加itsColor成员(COLOR类型)

3、Dog类中增加以下方法：

constructors: Dog()、Dog(int age)、Dog(int age, int weight)、Dog(int age, COLOR color)、 Dog(int age, int weight, COLOR color)、~Dog()

accessors: GetColor()、SetColor()

Other methods: WagTail()、BegForFood() ，并实现以上这些方法。

提示：类似Speak()、WagTail()这些动作，函数体可以是输出一句话。比如：Mammal is spaeking... , The Dog is Wagging its tail...

4、补充主函数的问号部分，并运行程序，检查输出是否合理。

enum COLOR{ WHITE, RED, BROWN, BLACK, KHAKI };

class Mammal

{

public:

//constructors

Mammal();

Mammal(int age);

~Mammal();

//accessors

int GetAge() const;

void SetAge(int);

int GetWeight() const;

void SetWeight(int);

//Other methods

void Speak() const;

void Sleep() const;

protected:

int itsAge;

int itsWeight;

};

int main()

{

Dog Fido;

Dog Rover(5);

Dog Buster(6, 8);

Dog Yorkie(3, RED);

Dog Dobbie(4, 20, KHAKI);

Fido.Speak();

Rover.WagTail();

cout << "Yorkie is " << ?? << " years old." << endl;

cout << "Dobbie weighs " << ?? << " pounds." << endl;

return 0;

}

输入格式:

无

输出格式:

按照程序格式输出。

输入样例:

在这里给出一组输入。例如：

无

输出样例:

在这里给出相应的输出。例如：

Mammal is speaking...

The dog is wagging its tail...

Yorkie is 3 years old.

Dobbie weighs 20

代码

#include <iostream>

using namespace std;

enum COLOR{ WHITE, RED, BROWN, BLACK, KHAKI };

class Mammal

{

public:

//constructors

Mammal()

{

}

Mammal(int age)

{

itsAge = age;

}

//accessors

int GetAge() const

{

return itsAge;

}

void SetAge(int age)

{

itsAge = age;

}

int GetWeight() const

{

return itsWeight;

}

void SetWeight(int weight)

{

itsWeight = weight;

}

//Other methods

void Speak() const

{

cout << "Mammal is speaking..." << endl;

}

void Sleep() const

{

cout << "Mammal is sleeping..." << endl;

}

protected:

int itsAge;

int itsWeight;

};

class Dog:public Mammal

{

COLOR itsColor;

public:

//constructors

Dog()

{

}

Dog(int age): Mammal(age)

{

}

Dog(int age, int weight): Mammal(age)

{

SetWeight(weight);

}

Dog(int age, COLOR color): Mammal(age)

{

itsColor = color;

}

Dog(int age, int weight, COLOR color): Mammal(age)

{

SetWeight(weight);

itsColor = color;

}

//accessors

COLOR GetColor()

{

return itsColor;

}

void SetColor(COLOR color)

{

itsColor = color;

}

//Other methods

void WagTail()

{

cout << "The dog is wagging its tail..." << endl;

}

void BegForFood()

{

cout << "The dog is begging for food..." << endl;

}

};

int main()

{

Dog Fido;

Dog Rover(5);

Dog Buster(6, 8);

Dog Yorkie(3, RED);

Dog Dobbie(4, 20, KHAKI);

Fido.Speak();

Rover.WagTail();

cout << "Yorkie is " << Yorkie.GetAge() << " years old." << endl;

cout << "Dobbie weighs " << Dobbie.GetWeight() << " pounds." << endl;

return 0;

}