C語言結構體中位域（位段）的使用

#include <stdio.h>

#include <stdlib.h>

struct bit

{

char i1:1;

char i2:1;

char i3:1;

char i4:1;

char i5:1;

char i6:1;

char i7:1;

char i8:1;

};

int main()

{

    char x=1;

    struct bit *pb=(struct bit*)&x; 

    pb->i5=1;

      printf("%d\n",x);

      system("pause");

          return 0;

}

摘自：宋金時的blog