按位运算符的实际用例

Question

以下按位运算符的一些实际用例是什么？

• 和

• XOR

• 不

• 要么

Answer 1

这很奇怪吗？(value & 0x1) > 0它可以被两个（偶数）整除吗？(value & 0x1) == 0

Answer 2

这里有一些常见的习惯用法处理存储为单个位的标志。enum CDRIndicators {&nbsp; Local = 1 << 0,&nbsp; External = 1 << 1,&nbsp; CallerIDMissing = 1 << 2,&nbsp; Chargeable = 1 << 3};unsigned int flags = 0;设置Chargeable标志：flags |= Chargeable;清除CallerIDMissing标志：flags &= ~CallerIDMissing;测试是否设置了CallerIDMissing和Chargeable：if((flags & (CallerIDMissing | Chargeable )) == (CallerIDMissing | Chargeable)) {}