练习15

#include <iostream>
using namespace std;


class Dog {
public:
Dog(int initialAge = 0, int initialWeight = 5);
~Dog();
int getAge() {
return age;
}
void setAge(int age) {
this->age = age;
}
int getWeight() {
return weight;
}
void setWeight(int weight) {
this->weight = weight;
}
private:
int age, weight;
};


Dog::Dog(int initialAge, int initialWeight) {
age = initialAge;
weight = initialWeight;
}


Dog::~Dog() //析构函数，不做任何工作
{
}


int main() {
Dog Jack(2, 10);
cout << "Jack is a Dog who is ";
cout << Jack.getAge() << " years old and " << Jack.getWeight() << " pounds weight" << endl;
Jack.setAge(7);
Jack.setWeight(20);
cout << "Now Jack is ";
cout << Jack.getAge() << " years old and " << Jack.getWeight() << " pounds weight." << endl;


return 0;
}