In the C programming language, operations can be performed on a bit level using bitwise operators.
Following are the six bitwise operators provided by C for bit manipulation| Symbol | Operator |
|---|---|
| & | bitwise AND |
| | | bitwise inclusive OR |
| ^ | bitwise exclusive OR |
| << | left shift |
| >> | right shift |
| ~ | bitwise NOT (one's complement) (unary) |
To understand these operation lets ahead with two example..
We know that in C, integer consumed 2 bytes or 16 bit memory. So the binary representation of 165 and 281 as the following
(165)10 = (10100101)2
(281)10 = (100011001)2
But in C when it consumed 16 bits, it will like the following..
165 = 0000000010100101
281 = 0000000100011001
These extra bits(0's) are added to make it 16 bit integer number. Now the operation take place as..
Now remains the shift operations, yeah..
You will clear by seeing the following two images of Right shift (>>) and Left Shift (<<)
Right Shift >>
To understand the operation we shifted it by 2 bits. All the bits of the number (165) shifted to right by 2 bits.
Left Shift
To understand it we shifted the number by 3 bits, all the bits of the number (165) shifted to left by 3 bits
NOT operation
We first complement each bit of the number (i.e., replace '1' by '0' and '0' by '1') To know more about 1's and 2's Complement
