Bit manipulation in C language. In this blog, we will see How to Set, Clear, and Toggle a bit in C language using the Bitwise operator.

## Content:

**we need 3 things. 1) Number 2) Position and 3) Output.**

**Setting a bit. **:

Ex: Number is 10.

The binary of 10 is 1010 -> 2nd bit is 0 need to set with 1. so my output will be 14 (1110).

If the bit is already set then do nothing and the output should be as it is.

how to reach at 2nd Position?

we will use the left shift operator and reach position. (1<<pos).

then we do a Bitwise OR operation with a number. **num | (1<<pos)** then the number became set.

num= num | (1<<pos) // Set a bit

### Clear a Bit

Ex: Number is 10

The binary of 10 is 1010 -> 3rd bit is 1 need to Clear 0. so my output will be 2 (0110).

for that I need to reach position first using shift operator (1<< pos). then do a compliment.

that output will do Bitwise AND Operation with Number.

num= num & ~(1<<pos) // Clear a bit

### Toggle (Compliment) a bit

Ex: Number is 10

The binary of 10 is 1010 -> 2nd bit is 0 need to set 1. so my output will be 14 (1110).

or Binary of 14(1110) -> 2nd bit is 1 need to clear 0. so my output will be 10 (1010).

we will use the left shift operator and reach position. (1<<pos).

then we do a Bitwise EXOR operation with a number. **num ^ (1<<pos)** then the number became a compliment If it is 0 then became 1 or If it is 0 then became 1.

**num= num ^ (1<<pos) // Toggle a bit**

### How to Find Particular bit is Set or clear.

We need to check particular bit is set or clear. not want to do any perform set clear and toggle bit.

Here our output is True (1) or False (0).

Example:

The number is 10 want to check if the 2nd position is set or clear.

**res= num & (1<<pos)** **or**

**res= (num >>pos) & 1)**

**Summary**

**Set a bit :** num= num | (1<<pos)

**Clear a bit :** num= num & ~(1<<pos)

**Toggle a bit: **num= num ^ (1<<pos)

**Particular bit set or clear: **res= num & (1<<pos) **or** res= (num >>pos) & 1)

**Watch the Below Video to get a Complete understanding with programming.**

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