The difference between | and || in c++

The difference between | (bitwise OR) and || (logical OR) in C is: 1. Operation: | performs bitwise comparison, while || performs logical comparison. 2. Priority: || has a higher priority than |. 3. Purpose: | is used for bit masking and shift operations, while || is used for logical operations, such as determining whether a condition is true.

The difference between | and || in C

Overview

## | and || in #C are both logical operators, used to operate on Boolean values. Although they are similar in syntax and operation, they differ in logical meaning and precedence.

Syntax

• |: Bitwise OR operator
• ||: Logical OR operator

Operation

Bitwise OR (
• |): Compare two Boolean values ​​bit by bit, If any bit is true, the result is true.
Logical OR (
• ||): If any Boolean value is true, the result is true.

Priority

• || has a higher priority than |. This means that the || operator is evaluated before the | operator.

Example

<code class="cpp">bool a = true;
bool b = false;

// 按位或
bool result1 = a | b; // true，因为 a 的任何一位为 true

// 逻辑或
bool result2 = a || b; // true，因为 a 为 true</code>

Key Differences

The following table summarizes the key differences between | and || ：

CharacteristicsBitwise OR()Logical OR()OperationBitwise comparisonLogical comparisonPriorityLowerHigherExample`10 = 1``truefalse = true`

When to use | and ||

##Use bitwise OR (

|
• ) to perform bit-by-bit operations, such as bit masks or shift operations. Use logical OR (
||
• ) to perform logical operations, such as determining whether a condition is true.

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