# How to create a mask in c

### What is masking in C language?

**Masking**is the act of applying a

**mask**to a value. This is accomplished by doing: Bitwise ANDing in order to extract a subset of the bits in the value. Bitwise ORing in order to set a subset of the bits in the value. Bitwise XORing in order to toggle a subset of the bits in the value.

### How do masks work in C?

**Masks**. Bit strings and bitwise operators

**are**often used

**to make masks**. A

**mask**is a bit string that “fits over” another bit string and produces a desired result, such as singling out particular bits from the second bit string, when the two bit strings

**are**operated upon.

### How do you make a bit mask in C++?

**Bit Masking**Explained with**C++**samples- To set n th
**bit**ON.**Bitwise**OR (|) can be used for this purpose. - To turn OFF nth
**bit**.**Bitwise**AND (&) can be used for this purpose. - To Toggle nth
**bit**. number ^= 1 << n; - To check whether nth
**bit**is ON or OFF.**bit**= (number >> (n-1)) & 1; - BitMasking.h. #include.
- BitMasking.
**cpp**. // BitMasking. - Sample. #include “stdafx.h”

### What is bit masking with example?

For

**example**, the**mask**10000101 means that the subset of the set [1… 8] consists of elements 1, 3 and 8. We know that for a set of N elements there are total 2^{N}subsets thus 2^{N}**masks**are possible, one representing each subset. Each**mask**is, in fact, an integer number written in binary notation.