The difference between & and && in C language

& and && are operators used for logical operations in C language, each with different functions and priorities. & performs a bitwise operation, performing a logical operation on each binary bit to produce a binary result. && performs a logical AND operation, is true only if both operands are true, produces a Boolean result, and has lower precedence than &.

The difference between & and && in C language

& and && are used for logical operations in C language Two operators, but they have different capabilities and precedence.

Bitwise operators (&)

• Perform bitwise operations, that is, perform logical operations on each binary bit of the operand.
• The operation result is a binary number, where each bit is the logical operation result of the corresponding bit of the corresponding operand.
• Commonly used for mask bits, set bits and clear bits.

Logical operator (&&)

• Performs a logical AND operation, that is, the result is only when both operands are true. real.
• The result of the operation is a Boolean value (true or false).
• Short-circuit evaluation, that is, if the first operand is false, the second operand will not be evaluated.

Priority

• & has a higher priority than &&. This means that, without parentheses, the & operation takes precedence over the && operation.

Example

• & Operation:

  • 10 & 5 = 0b1010 & 0b0101 = 0b0000 (4)

• && Operation:

  • (10 > 5) && (5 != 0) = true && true = true

Conclusion

• & Performs bitwise operations, producing binary results .
• && performs a logical AND operation, producing a Boolean result.
• & has higher priority than &&.

The above is the detailed content of The difference between & and && in C language. For more information, please follow other related articles on the PHP Chinese website!