C++细讲深浅拷贝与初始化列表如何操作

#include<iostream>
using namespace std;
//深浅拷贝问题，存在经典的坑,面试考过
class Person
{
public:
	Person(int age,int height)
	{
		m_age = age;
		m_Height = new int(height);
		cout << "Person 的有参构造函数调用" << endl;
	}
	//自己写不同于编译器的拷贝构造函数属于深拷贝
	Person(const Person& p)
	{
		cout << "拷贝构造函数调用" << endl;
		m_age = p.m_age;
		//m_Height = p.m_Height;
		/*编译器默认执行上行代码
		新开辟的地址相同，会导致调用析构函数时违法操作，无法访问内存*/
		m_Height =new int(*p.m_Height);
	}
	~Person()
	{
		//析构代码，将堆区开辟的数据做释放操作
		if (m_Height != NULL)
		{
			delete m_Height;
			m_Height = NULL;
		}
		cout << "~Person 的析构构造函数调用"<<endl;
	}
	int m_age;
	int* m_Height;
};
void test()
{
	Person p1(20,180);
	Person p2(p1);
	cout << "p2.age= " << p2.m_age << " p2.height=" << *p2.m_Height << endl;
}
int main()
{
	test();
	system("pause");
}

Person(const Person& p)
	{
		cout << "拷贝构造函数调用" << endl;
		m_age = p.m_age;
		//m_Height = p.m_Height;
		/*编译器默认执行上行代码
		新开辟的地址相同，会导致调用析构函数时违法操作，无法访问内存*/
		m_Height =new int(*p.m_Height);
	}
	~Person()
	{
		//析构代码，将堆区开辟的数据做释放操作
		if (m_Height != NULL)
		{
			delete m_Height;
			m_Height = NULL;
		}
		cout << "~Person 的析构构造函数调用"<<endl;
	}

class Person
{
public:
	Person() :m_age(20), m_sex(1), m_height(180){}
	Person(int a, int b, int c) :m_age(a), m_sex(b), m_height(c){}
	int m_age;
	int m_sex;
	int m_height;
};
int main()
{
	Person p1;
	Person p2(10, 20, 30);
	cout << "年龄为：" << p1.m_age;
	cout << "性别为：" << p1.m_sex;
	cout << "身高为：" << p1.m_height<<endl;
	cout << "年龄为：" << p2.m_age;
	cout << "性别为：" << p2.m_sex;
	cout << "身高为：" << p2.m_height << endl;;
}