Bitwise AND OPERATION

Bitwise AND operator "&" are binary operators. Its function is the binary phase corresponding to the two numbers involved in the operation. The result bit is 1 only when the two binary numbers are 1. Otherwise, the result bit is 0. The number of involved operations is supplemented.

For example:9 & 5 writeable formula:

00001001 (Binary complement of 9)

& Amp; 00000101 (Binary complement of 5)

00000001 (Binary complement of 1)

Visible9 & 5 = 1.

Bitwise AND operations are usually used to clear certain bits0 or retain some bits. For example, if a clears the high eight bits of 0 and retains the low eight bits, it can be used as a & 255 operation (255 of the binary number is 0000000011111111 ).