深拷贝与浅拷贝

#define _CRT_SECURE_NO_WARNINGS

#include <iostream>

using namespace std;

class person

{

public:

person()

{

}

//初始化属性

person(char * name, int age)

{

m_name = (char*)malloc(strlen(name) * 1);

strcpy(m_name,name);

m_age = age;

}

//自己提供拷贝构造，原因简单的拷贝构造会释放堆区两次，导致挂掉 //深拷贝

person(const person&p)

{

m_age = p.m_age;

m_name = (char*)malloc(strlen(p.m_name) + 1);

strcpy( m_name, p.m_name);

}

//拷贝构造 系统会提供默认拷贝构造，而且是简单的值拷贝//浅拷贝

~person()

{

cout << "析构函数调用" << endl;

if(m_name != NULL)

{

free(m_name);

m_name = NULL;

}

}

char * m_name;

int m_age;

};

void test1()

{

person p1("敌军",10);

person p2(p1); //调用了拷贝构造

}

int main()

{

test1();

system("pause");

return EXIT_SUCCESS;

}

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