c++day3(2023/12/28)

发布时间:2024年01月04日
#include <iostream>
#include<iomanip>
#include<cstring>
using namespace std;

class Person
{
    int *age;
    string &name;
public:
    void showPerson();
    Person(int age,string name):age(new int(age)),name(name)
    {
        cout << "Person有参构造调用了\n" << endl;
    }

    Person(const Person &other):age(new int(*(other.age))),name(other.name)
    {
        cout << "Person调用了拷贝构造函数" <<endl;
    }

    ~Person()
    {
        delete age;
        cout << "Person析构函数被调用了" << endl;
    }
};
void Person::showPerson()
{
    cout << "*age=" << *age << endl;
    cout << "age=" << age << endl;
    cout << "name=" << name << endl;
}

class Stu
{
    double *score;
    Person person;
public:
    void showStu();
    Stu(double score,int age,string name):score(new double(score)),person(age,name)
    {

        cout << "有参构造函数" <<endl;
    }

    Stu(const Stu &other):score(new double(*(other.score))),person(other.person)
    {
        cout << "Stu调用了拷贝构造函数" << endl;
    }

    ~Stu()
    {
        delete score;
        cout <<"Stu析构函数被调用了" <<endl;
    }
};

void Stu::showStu()
{
    cout << "*score=" << *score <<endl;
    cout << "score="  << score <<endl;
    person.showPerson();
}


int main()
{
    cout << "--------有参构造函数---------" <<endl;
    Stu stu(90,23,"刘亦菲");
    stu.showStu();
    cout << "---------拷贝构造函数 --------";
    Stu stu2=stu;
    stu2.showStu();


    return 0;
}

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文章来源:https://blog.csdn.net/weixin_45340901/article/details/135279287
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