// 单继承虚函数无overload.cpp : Defines the entry point for the console application.

//

#include "stdafx.h"

class Parent{

public:

virtual void fun1(){

}

virtual void fun2(){

}

};

class Sun:public Parent{

public:

virtual void fun3(){

}

virtual void fun4(){

}

};

class Parent1{

public:

virtual void fun1(){

printf("Parent1======fun1======\n");

}

virtual void fun2(){

printf("Parent1======fun2======\n");

}

};

class Sun1:public Parent1{

public:

virtual void fun1(){ //虚函数fun1重写

printf("Sun======= fun1=======\n");

}

virtual void fun2(){ //虚函数fun2重写

printf("Sun======= fun2=======\n");

}

};

void test1(){ //测试虚函数无重写函数

Sun sun;

Sun* ps=&sun;

printf(" 对象首地址即this的地址是：%x\n",ps); //18ff44

int* point=(int*)ps;

int* addr=(int*)(*point);

printf("虚函数的地址为：%x\n",addr);

sun.fun1();

for(int i=0;i<4;i++){

printf("%x\n",*(addr+i));

}

}

void test2(){

Sun1 sun;

Parent1 parent1;

Sun1* ps=&sun;

printf(" 对象首地址即this的地址是：%x\n",ps); //

int* point=(int*)ps;

int* addr=(int*)(*point);

printf("虚函数的地址为：%x\n",addr);

sun.fun1();

parent1.fun1();

for(int i=0;i<4;i++){

printf("%x\n",*(addr+i));

}

}

int main(int argc, char* argv[])

{

test2();

printf("Hello World!\n");

return 0;

}