c - C语言中如何设置位

Question

有一个变量:

char segment = 0;

在 1 之后或使用位 15，段 = 1；

只是意味着已经检查了这一点。

问题是如何取消bit 15的标记(设置回0)？

使用“~”？

Answer 1

以下程序设置位、清除位和切换位

#include<stdio.h>

void main(void)
{
unsigned int byte;
unsigned int bit_position;
unsigned int tempbyte = 0x01;
//get the values of the byte and the bit positions 
//set bit
byte = (byte | (tempbyte << bit_position));// set the bit at the position given by bit_position
//clear bit
byte = (byte & ~(tempbyte << bit_position));//clear the bit at the position given by bit_position
//toggle bits
byte = (byte ^ (tempbyte << bit_position));//toggle the bit at the position given by bit_position
}