【嵌入式学习】C++&QT-Day3-C++基础

笔记

见我的博客：https://lingjun.life/wiki/EmbeddedNote/19Cpp

作业

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 <iostream>

using namespace std;

class Per
{
   
private:
    string name;
    unsigned int age;
    float *height;
    float *weight;

public:
    // 构造函数
    Per(string n, unsigned int a, float h, float w) : name(n), age(a), height(new float(h)), weight(new float(w))
    {
   
        cout << "Per::有参构造函数" << endl;
    }

    // 析构函数
    ~Per()
    {
   
        delete height;
        delete weight;
        cout << "Per::析构函数" << endl;
    }

    // 拷贝构造函数
    Per(const Per &other) : name(other.name), age(other.age), height(new float(*(other.height))), weight(new float(*(other.weight)))
    {
   
        cout << "Per::拷贝构造函数" << endl;
    }
};

class Stu
{
   
private:
    int score;
    Per p1;

public:
    // 有参构造函数
    Stu(int score, string n, unsigned int a, float h, float w) : score(score), p1(n, a, h, w)
    {
   
        cout << "Stu::有参构造函数" << endl;
    }

    // 析构函数
    ~Stu()
    {
   
        cout << "Stu::析构函数" << endl;
    }

    // 拷贝构造函数
    Stu(const Stu &other) : score(other.score), p1(other.p1)
    {
   
        cout << "Stu::拷贝构造函数" << endl;
    }
};

int main()
{
   
    Stu s1(99, "张三", 18, 170, 60);
    Stu s2 = s1;
    return 0;
}

结果：