day3C++

day3C++_第1张图片

设计一个Per类,类中包含私有成员:姓名、年龄、指针成员身高、体重,再设计一个Stu类,类中包含私有成员:成绩、Per类对象p1,设计这两个类的构造函数、析构函数和拷贝构造函数。

#include 

using namespace std;

class Per
{
private:
    string name;
    int age;
    double *height;
    double *weight;
public:
    Per()
    {
        cout << "Per::无参构造函数" << endl;
    }
    Per(string name,int age,double h,double w):name(name),age(age),height(new double(h)),weight(new double(w))
    {
        cout << "Per::有参构造函数" << endl;
    }
    ~Per()
    {
        cout << "Per::析构函数" << endl;
        delete height;
        delete weight;
    }
    Per(const Per &other):name(other.name),age(other.age),height(other.height),weight(other.weight)
    {
        cout << "Per::拷贝构造函数" << endl;
    }
};

class Stu
{
private:
    double score;
    Per p1;
public:
    Stu()
    {
        cout << "Stu::无参构造函数" << endl;
    }
    Stu(double score,string name,int age,double h,double w):score(score),p1(name,age,h,w)
    {
        cout << "Stu::有参构造函数" << endl;
    }
    ~Stu()
    {
        cout << "Stu::析构函数" << endl;
    }
    Stu(const Stu &other):score(other.score),p1(other.p1)
    {
        cout << "Stu::拷贝构造函数" << endl;
    }
};

int main()
{
    Stu s1;
    Stu s2(99.5,"张三",18,180,140);
    Stu s3=s2;
    return 0;
}

day3C++_第2张图片

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