9.1C++——类中特殊的成员函数

一、思维导图

二、编程练习

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。

1、代码

#include <iostream>using namespace std;
class Per
{
private:string name; //姓名int age;  //年龄int *height;  //身高int *weight;  //体重
public://构造函数Per(string name="--",int age=0,int height=0,int weight=0):name(name),age(age),height(new int(height)),weight(new int(weight)){cout << "Per::构造函数" << endl;}//拷贝构造函数Per(const Per &other):name(other.name),age(other.age),height(new int(*(other.height))),weight(new int(*(other.weight))){cout << "Per::拷贝构造函数" << endl;}//析构函数~Per(){delete height;delete weight;height=nullptr;weight=nullptr;cout << "Per::析构函数" << endl;}
};
class Stu
{
private:double score; //成绩Per p1;
public://构造函数Stu(double score=0,string name="--",int age=0,int height=0,int weight=0):score(score),p1(name,age,height,weight){cout << "Stu::构造函数" << 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;}//析构函数~Stu(){cout << "Stu::析构函数" << endl;}
};
int main()
{Stu s1(88,"lihua",18,175,55);Stu S2(s1);return 0;
}

2、现象