位域运算，位域bs的存储

#include<stdio.h>

struct bs

{

 unsigned a:1;

 unsigned b:3;

 unsigned c:4;

}bit,*pbit;

main()

{

 char x;

 bit.a=1;

 bit.b=7;

 bit.c=15;

 printf("%d %d %d",bit.a,bit.b,bit.c);

 x=0;

 memcpy(&x,(char*)&bit,sizeof(char));

 printf("0.x=0x%x,x=%d\n",x,x);

 pbit=&bit;

 pbit->a=0;

 pbit->b&=3;

 pbit->c|=1;

 printf("%d %d
%d",pbit->a,pbit->b,pbit->c);

 x=0;

 memcpy(&x,(char*)pbit,sizeof(char));

 printf("1.x=0x%x,x=%d\n",x,x);

}