结构体成员有冒号 位域 位段

//gcc 5.4.0

#include <stdio.h>

typedef struct wave
{
unsigned char temp0:1;
unsigned char temp1:1;
unsigned char temp2:1;
unsigned char temp3:1;
unsigned char temp4:1;
unsigned char temp5:1;
unsigned char temp6:1;
unsigned char temp7:1;
}wave;

int main(void)
{
printf("Hello, world!\n");
wave w;

unsigned char a=0; //a是8位的
int b=0xf0; // 1111 0000
printf("b=%x\n",b);

printf("w.temp5 =%x\n",w.temp5);
b=(int)(b|w.temp5);
printf("b|w.temp5=%x\n",b);


b=0xf0;
b=(int)(b&(int)w.temp1);
printf("b|w.temp1=%x\n",b);
return 0;
}

输出的结果是:

Hello, world!
b=f0
w.temp5 =0
b|w.temp5=f0
b|w.temp1=0

结构体成员有冒号 位域 位段

原文：https://www.cnblogs.com/chulin/p/12781597.html