#include <stdio.h>
typedef unsigned short WORD;
typedef unsigned long DWORD;
class A
{
WORD m_a1;
WORD m_a2;
public:
A(){ m_a1=1; m_a2=2; }
void func(){ printf("m_a1=%d,m_a2=%d" , m_a1 , m_a2); }
};
class B
{
DWORD m_b1;
public:
B(){ m_b1=3; }
void func(){ printf("m_b1=%d/n" , m_b1); }
};
void main()
{
A a;
B *pB;
pB = (B*)&a;
pB->func();
}