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【笔记】C语言按位运算符

 1 year ago
source link: https://feiju12138.github.io/2022/11/04/C%E8%AF%AD%E8%A8%80%E6%8C%89%E4%BD%8D%E8%BF%90%E7%AE%97%E7%AC%A6/
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【笔记】C语言按位运算符

2022-11-04C语言学习指北

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C语言按位运算符

按位取反运算

  • 所有位取反
1001 1001
---------
0110 0110
num = ~num;

左移运算符

  • 左移1位，最低位补0
1001 1001
---------
0011 0010
num << 1;

右移运算符

  • 右移1位，最高位补0
1001 1001
---------
0100 1100
num >> 1;

按位与运算

  • 有0则0，全1为1
1001 1001
1010 1010
---------
1000 1000
num = num & 0b10101010;

按位或运算

  • 有1则1，全0则0
1001 1001
1010 1010
---------
1011 1011
num = num & 0b10101010;

按位异或运算

  • 不同为1，相同为0
1001 1001
1010 1010
---------
0011 0011
num = num ^ 0b10101010;

按位同或运算

  • 相同为1，不同为0
1001 1001
1010 1010
---------
1100 1100
# C

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