#include "iostream"

using namespace std;


union A
{
    struct B
    {
        unsigned int x1:2;
        unsigned int x2:3;
        unsigned int x3:3;
    };
   
    char a;
    B b;
};
   
   
int main(int argc, char *argv[])
{
A a;
a.a=100;

cout<<a.b.x1<<endl<<a.b.x2<<endl<<a.b.x3<<endl;

system("pause");
return 0;
}

//结果   0 1 3

Quote:

引用第1楼kenneygf于2006-11-06 15:17发表的:
unsigned int x1:2;
    unsigned int x2:3;
    unsigned int x3:3;


.......

bit field