c++子类调用基类方法的一个例子

2024-04-11 21:16:55

Base.h

#pragma
once

class Base

{

public:

Base(void);

~Base(void);

bool CreatClone(Base* item);

char* m_baseprop1;

};

Base.cpp

#include
"StdAfx.h"

#include
"Base.h"

Base::Base(void)

: m_baseprop1(NULL)

{

}

Base::~Base(void)

{

}

bool Base::CreatClone(Base* item)

{

m_baseprop1 = item->m_baseprop1;

return
false;

}

Derived.h

#pragma
once

#include
"base.h"

class Derived :

public Base

{

public:

Derived(void);

~Derived(void);

char* m_devprop1;

bool CreatClone(Derived* item);

};

Derived.cpp

#include
"StdAfx.h"

#include
"Derived.h"

Derived::Derived(void)

: m_devprop1(NULL)

{

}

Derived::~Derived(void)

{

}

bool Derived::CreatClone(Derived* item)

{

m_devprop1 = item->m_devprop1;

//基类方法的调用通常放在方法的最后。

Base::CreatClone(item);

return
false;

}

Main.cpp

#include
"stdafx.h"

#include
<string>

#include
<windows.h>

#include
"Derived.h"

int _tmain(int argc, _TCHAR* argv[])

{

Derived* d = new Derived();

d->m_baseprop1 = "aa";

d->m_devprop1 = "bb";

Derived* d2 = new Derived();

d2->CreatClone(d);

system("pause"); //这里打断点跟踪，发现d的m_baseprop1和m_devprop1都克隆给了d2

return 0;

}