What does a|b mean in c++

In C, a | b represents a bitwise OR operation, which compares the operands of two integers bit by bit. If any of the corresponding bits is 1, the result bit is 1; otherwise, is 0. Bitwise OR operations can be used for tasks such as setting flag bits, merging bit masks, detecting overlapping bits, and creating bit vectors.

In C, the meaning of a | b

In C, a | b represents bitwise OR operation. It is a bitwise operator that operates on two integer types (such as int, unsigned int, etc.).

How to perform a bitwise OR operation

The bitwise OR operation compares the binary representation of two operands bit by bit. If any of the corresponding bits is 1, The result bit is 1; otherwise, it is 0.

For example:

<code>a = 0101 (5)
b = 1010 (10)

a | b = 1111 (15)</code>

In binary representation:

<code>0101 | 1010
      ------
1111</code>

Uses

The bitwise OR operation can be used to perform a variety of tasks , For example:

• Set flag bit:Set one or more binary bits to represent a specific condition or status.
• Merge Bitmasks: Combine bitmasks from different sources into a single mask.
• Detect overlapping bits: Check whether there are overlapping bits between two values, thereby determining whether they share any common characteristics.
• Create a bit vector: Create a bit vector containing a set of bit flags by bitwise ORing different values ​​together.

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