#include<iostream>
using namespace std;
//深淺拷貝問(wèn)題，存在經(jīng)典的坑,面試考過(guò)
class Person
{
public:
	Person(int age,int height)
	{
		m_age = age;
		m_Height = new int(height);
		cout << "Person 的有參構(gòu)造函數(shù)調(diào)用" << endl;
	}
	//自己寫(xiě)不同于編譯器的拷貝構(gòu)造函數(shù)屬于深拷貝
	Person(const Person& p)
	{
		cout << "拷貝構(gòu)造函數(shù)調(diào)用" << endl;
		m_age = p.m_age;
		//m_Height = p.m_Height;
		/*編譯器默認(rèn)執(zhí)行上行代碼
		新開(kāi)辟的地址相同，會(huì)導(dǎo)致調(diào)用析構(gòu)函數(shù)時(shí)違法操作，無(wú)法訪問(wèn)內(nèi)存*/
		m_Height =new int(*p.m_Height);
	}
	~Person()
	{
		//析構(gòu)代碼，將堆區(qū)開(kāi)辟的數(shù)據(jù)做釋放操作
		if (m_Height != NULL)
		{
			delete m_Height;
			m_Height = NULL;
		}
		cout << "~Person 的析構(gòu)構(gòu)造函數(shù)調(diào)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 << "拷貝構(gòu)造函數(shù)調(diào)用" << endl;
		m_age = p.m_age;
		//m_Height = p.m_Height;
		/*編譯器默認(rèn)執(zhí)行上行代碼
		新開(kāi)辟的地址相同，會(huì)導(dǎo)致調(diào)用析構(gòu)函數(shù)時(shí)違法操作，無(wú)法訪問(wèn)內(nèi)存*/
		m_Height =new int(*p.m_Height);
	}
	~Person()
	{
		//析構(gòu)代碼，將堆區(qū)開(kāi)辟的數(shù)據(jù)做釋放操作
		if (m_Height != NULL)
		{
			delete m_Height;
			m_Height = NULL;
		}
		cout << "~Person 的析構(gòu)構(gòu)造函數(shù)調(diào)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 << "年齡為：" << p1.m_age;
	cout << "性別為：" << p1.m_sex;
	cout << "身高為：" << p1.m_height<<endl;
	cout << "年齡為：" << p2.m_age;
	cout << "性別為：" << p2.m_sex;
	cout << "身高為：" << p2.m_height << endl;;
}