C++深拷贝与浅拷贝

 一.代码

#include <iostream>
using namespace std;

class person {
public:
	person() {

	}
	person(int age,int hight) {
		cout << "有参构造" << endl;
		m_age = age;
		m_hight = new int(hight);
	}
	person(const person& p) {
		cout << "拷贝构造" << endl;
		m_age = p.m_age;
		m_hight = new int(*p.m_hight);
	}

	~person() {
		cout << "析构函数" << endl;
		if (m_hight != NULL) {
			delete m_hight;
			m_hight = NULL;
		}
	}
	int m_age;
	int* m_hight;
};

void test01() {
	person p1(18,160);

	cout << "p1的年龄为:" << p1.m_age << "p1的身高为: " << *p1.m_hight << endl;
	person p2(p1);

	cout << "p2的年龄为:" << p2.m_age << "p2的身高为: " << *p2.m_hight << endl;
}


int main() {
	test01();
	return 0;
}

二.解析

拷贝构造函数，是一种特殊的构造函数，它在创建对象时，是使用同一类中之前创建的对象来初始化新创建的对象。