ex2-3.cpp

嵌入式程序设计的十个实例的源代码。欢迎大家下载

#include <iostream>
using namespace  std;
struct packed_data1
{
	unsigned  u1:32;
	unsigned  u2:32;
};
struct packed_data2
{
	unsigned  u1:32;
	unsigned  u2:32;
	unsigned  u3:32;
	unsigned  u4:32;
};
void main()
{
	struct packed_data1 pu1,pu2;
	struct packed_data2 pu;
	pu1.u1=~0L;
	pu1.u2=~0L;
	pu2.u1=~0L;
	pu2.u2=~0L;
	pu.u1=~0L;
	pu.u2=~0L;
	pu.u3=~0L;
	pu.u4=~0L;
	unsigned tmp1,tmp2;
	unsigned long tl;
	tmp1=*(unsigned*)&pu1;
	tmp2=*(unsigned*)&pu1;
	tl=tmp1*tmp2;
	cout<<tmp2<<endl;
}