CODEWITHSUNDEEP
xor
Rajat Saxena
Rajat Saxena

Reputation: 3935

Bitwise XOR: Setting X bit

I am a little confused about how to go about solving this one.

I read somewhere that 

n ^ (1 << x)

Will solve it. Can I get to see a diagrammatic explanation of how this works?

Upvotes: 0

Views: 136

Answers (1)

dvhh
dvhh

Reputation: 4750

Assuming we work with 8 bit number First you start with 1

which would look like this in binary

00000001

then use the << operator to shift the bits of the operand by x bit

if x = 4

00001000 ( 16 in decimal, 0x10 in hexadecimal )

then use the ^ operator (xor) with the resulting operand

input n=8 ( 00000100)

result

     00000100
xor  00001000
  =  00001100

PS: xor would flip the bit not set it, if you want to set it whatever the initial state, use the or operator (|)

Upvotes: 2

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