c 实验8 继承与派生上机练习题.doc

定义一个哺乳动物类Mammal,并从中派生出一个狗类Dog,下面给出Mammal类的定义,要求:
添加Dog类的颜色数据成员,访问属性为私有,通过SetColor和GetColor成员函数来对颜色进行设置和获取。
分别为基类和派生类添加相应的构造函数(有参、无参)和析构函数,并进行测试。
class Mammal
{
protected:
int itsAge;
int itsWeight;
public:
int GetAge(){return itsAge;}
void SetAge(int age) {itsAge=age;}
int GetWeight() { return itsWeight;}
void SetWeight(int weight) {itsWeight= weight;}
};
class Dog : public Mammal
{
//定义Dog类的数据成员和成员函数
};
改:
#include <>
#include <string>
using namespace std;
class Mammal
{

protected:
int itsAge;
int itsWeight;
public:
Mammal();
~Mammal();
int GetAge(){return itsAge;}
void SetAge(int age) {itsAge=age;}
int GetWeight() { return itsWeight;}
void SetWeight(int weight) {itsWeight= weight;}
};
class Dog : public Mammal
{
protected:
char itscolor[20];
public:
Dog();
void Setcolor(char *color) {strcpy(itscolor,color);}

void getcolor(){cout<<"狗的颜色"<<itscolor<<endl;}
//定义Dog类的数据成员和成员函数
};
////////////////////////
Mammal::Mammal()
{
int age1,weight1;
cout<<"请输入动物的年龄:"<<endl;
cin>>age1;
SetAge(age1);
cout<<"请输入动物的体重:"<<endl;
cin>>weight1;
SetWeight(weight1);
}
Mammal::~Mammal()
{
cout<<"Destructor called."<<endl;
}
Dog::Dog()
{char color[20];
cout<<"请输入狗的颜色:"<<endl;
cin>>color;Setcolor(color);
cout<<"狗的颜色"<<itscolor<<"体重"<<GetWeight()<<"年龄"<<GetAge()<<endl;
}
void main()
{
Dog dog1;