Bitwise XOR in Arduino

Just like other bitwise operators, bitwise XOR also applies on the corresponding bits individually.

The operator is ^ and the syntax is,

a ^ b

where a and b are the two numbers to be XORed.

The truth table for XOR is given below −

As you can see, the XOR operator returns 1 only when the two bits are different.

If you perform 10 ^ 3, this is the computation that will happen at the bit level (assuming your board represents integers using 16 bits)

Example

Let’s verify this on the Serial Monitor. The code is given below −

void setup() {    // put your setup code here, to run once:    Serial.begin(9600);    Serial.println();    int a = 10;    int b = 3;    Serial.println(a ^ b); } void loop() {    // put your main code here, to run repeatedly: }

Output

The Serial Monitor output is shown below −

As you can see, the output is exactly as expected.