C++简明图解分析浅拷贝与深拷贝

#include <iOStream>
#include <string.h>
#include <stdlib.h>
using namespace std;
class Person
{
public:
    char *m_name;
public:
    Person(char *name)
    {
        cout<<"有参构造"<<endl;
        m_name = (char *)calloc(1,strlen(name)+1);
        if(m_name == NULL)
        {
            cout<<"空间申请失败"<<endl;
            exit(-1);
        }
        strcpy(m_name, name);
    }
    ~Person()
    {
        cout<<"析构函数"<<endl;
        //释放指针成员 指向的堆区空间
        if(m_name != NULL)
        {
            free(m_name);
            m_name = NULL;
        }
        cout<<"-----001------"<<endl;
    }
};
int main(int arGC, char *argv[])
{
    Person ob1("lucy");
    Person ob2 = ob1;//拷贝构造（默认是浅拷贝）
    cout<<"ob2.m_name = "<<ob2.m_name<<endl;
    return 0;
}

#include <iostream>
#include <string.h>
#include <stdlib.h>
using namespace std;
class Person
{
public:
    char *m_name;
public:
    Person(char *name)
    {
        cout<<"有参构造"<<endl;
        m_name = (char *)calloc(1,strlen(name)+1);
        if(m_name == NULL)
        {
            cout<<"空间申请失败"<<endl;
            exit(-1);
        }
        strcpy(m_name, name);
    }
    Person(const Person &ob)
    {
        cout<<"拷贝构造函数（深拷贝）"<<endl;
        m_name = (char *)calloc(1, strlen(ob.m_name)+1);
        if(m_name == NULL)
        {
            cout<<"空间申请失败"<<endl;
            exit(-1);
        }
        strcpy(m_name, ob.m_name);
    }
    ~Person()
    {
        cout<<"析构函数"<<endl;
        //释放指针成员 指向的堆区空间
        if(m_name != NULL)
        {
            free(m_name);
            m_name = NULL;
        }
    }
};
int main(int argc, char *argv[])
{
    Person ob1("lucy");
    Person ob2 = ob1;//拷贝构造
    cout<<"ob2.m_name = "<<ob2.m_name<<endl;
    return 0;
}

class Data
{
public:
    Data()
    {
        cout<<"无参构造"<<endl;
    }
    Data(const Data &ob)
    {
        cout<<"拷贝构造"<<endl;
    }
    ~Data()
    {
        cout<<"析够函数"<<endl;
    }
};

Data ob1;
Data ob2 = ob1;//调用拷贝构造

void fun01(Data ob)//Data ob=ob1  发生拷贝构造
{
}
int main(int argc, char *argv[])
{
    Data ob1;
    fun01(ob1);
    return 0;
}

#include <iostream>
using namespace std;
Data fun01(void)
{
    Data ob1;
    return ob1;
}
int main(int argc, char *argv[])
{
    Data ob = fun01();
    return 0;
}