Deep copy ,Shallow copy, copy constructor,"="

Dog.h

#pragma onceclass Dog{public:    char *name;    Dog();    Dog(const Dog &it);    ~Dog();    void operator =(const Dog &it);};

 

Dog.cpp

 

#include "Dog.h"#include
     
      #include
      
       using namespace std;//ConstructorDog::Dog(){    name = new char[20];    memset(name,0,sizeof(name));    strcpy(name,"xiaohuang");    cout << "dog" << endl;}//DestructorDog::~Dog(){    delete []name;    cout << "~dog" << endl;}// copy constructorDog::Dog(const Dog &it){    name = new char[20];    memset(name, 0, sizeof(name));    strcpy(name, it.name);    cout << "copy dog" << endl;}// overload = void Dog:: operator =(const Dog &it){    strcpy(name, it.name);    cout << " = " << endl;}
      
     

 

main.cpp

#include"Dog.h""using namespace std;void test(){    Dog d1;    Dog d2 = d1;    Dog d3;    d3 = d1;}void main(){        test();    system("pause");}