（&&和&）和（||和|）之间有什么区别？ [英] What's the difference between (&& and &) and (|| and |)?

问题描述

可能重复：

Logical vs bitwise

标题本身可能是一个条件:)
无论如何，逻辑和按位和和或运算符之间的区别如何？例如，在 if（true || false）的if语句中，与 if（true | false）？同样， if（true&& false）和 if（true& false）。
新手

The title could be a condition in itself :) Anyway, how do the logical and bitwise and and or operators differ from each other? For example, in an if statement such as if(true || false), how would that differ from if(true | false)? Same goes with if(true && false) and if(true & false). Muy gracias, the newbie

推荐答案

逻辑运算符&& c $ c>和 || 总是evlauate为0或1，他们关心的是操作数是非零还是零。此外，这些运算符允许短路，这是非常有用的。

The logical operators && and || always evlauate to 0 or 1, and all they care about is whether the operands are non-zero or zero. Also, these operators allow short circuiting which is very useful.

位运算符& 和<$ c $

The bitwise operators & and | operate on each bit separately.

例如：

2 && 1 == 1
2 & 1  == 0
0 || 2 == 1
0 | 2  == 2

如果你只是使用bools，那么两组运算符的行为应该相同除了逻辑运算符的短路属性。

If you're just using bools then the two sets of operators should behave the same except for the short-circuiting property of the logical operators.

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