C: 面向对象(2)

演示如何用C实现继承，重载之类的玩艺儿。VC++6.0编译通过。
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef class
        #define class struct
#endif
#ifndef private
        #define private
#endif
#ifndef public
        #define public
#endif
#ifndef protected
        #define protected
#endif
#ifndef bool
        #define bool int
#endif
#ifndef true
        #define true 1
#endif
#ifndef false
        #define false 0
#endif
class Parent{
 //private members
 private class Parent *this;
 private char *name;
 //public members
 public void (*construct)(class Parent *this);
 public bool (*setName)(class Parent *this, const char *name);
 public char* (*getName)(class Parent *this);
 public void (*destruct)(class Parent *this);
};
class Son{
 //private members
 private class Son *this;
 //inherit properties from Parent, we use a pointer here to simulate inheritance
 private class Parent *inherit;
 //add new members
 private char* addr;
//public members
 public bool (*construct)(class Son *this); 
 public bool (*setName)(class Son *this, const char *name);
 public char* (*getName)(class Son *this);
 public bool (*setAddr)(class Son *this, const char *addr);
 public char* (*getAddr)(class Son *this);
 public void (*destruct)(class Son *this);
};
//foward declaration
//-----Members for Parent begin
void ParentConstruct(class Parent *this);
bool setName(class Parent *this, const char *name);
char *getName(class Parent *this);
void ParentDestruct(class Parent *this);
//-----Mmmbers for Parent end
//----Members for Son begin
bool SonConstruct(clas