Bitwise NOT (~)

The NOT operator (~) flips every bit in a number. Every 0 becomes 1, and every 1 becomes 0.

Example: $\sim5$. In 8-bit binary, $5 = 00000101$. Flipping all bits gives $11111010$. But here's the catch: computers use signed integers with two's complement representation, so $\sim5 = -6$ in most programming languages.

You won't use NOT as often as the other operators, but it's useful when combined with AND to clear specific bits.