浅拷贝与深拷贝

浅拷贝：简单的赋值拷贝操作
深拷贝：在堆区重新申请空间，进行拷贝操作

#include<iostream>
using namespace std;
class Person
{
public:
	Person()
	{
		cout << "无参构造调用" << endl;
	}
	Person(int age,int height)
	{
		m_Age = age;
		m_Height = new int(height);
		cout << "有参构造调用" << endl;
	}
	//自己实现拷贝构造
	Person(const Person &p)
	{
		m_Age = p.m_Age;
		//m_Height =p.m_Height; 这行是编译器默认实现的代码，是浅拷贝
		//下面是深拷贝
		m_Height =new int(*p.m_Height);

	}
	~Person()
	{
		if (m_Height != NULL)
		{
			delete m_Height;
			m_Height == NULL;
		}
		cout << "析构函数调用" << endl;
	}
	int m_Age;
	int *m_Height;
};

void test01()
{
	Person p1(18,160);
	Person p2(p1);
	cout << "p1的年龄和身高：" << p1.m_Age <<"，"<<*p1.m_Height<< endl;
	cout << "p2的年龄和身高：" << p2.m_Age << "，" << *p2.m_Height << endl;
}

void main()
{
	test01();
	system("pause");
}

下图是浅拷贝带来的问题

下面是深拷贝解决堆区重复释放问题

https://www.bilibili.com/video/BV1et411b73Z?p=110