#!/bin/bash
# Assign initial values to the variables
a=30
b=40
c=45

echo "Before swapping a number: a = $a, b = $b, c = $c"

# Swap the values
a=$((a ^ b ^ c))
b=$((a ^ b ^ c))
c=$((a ^ b ^ c))
a=$((a ^ b ^ c))

echo "After swapping a number: a = $a, b = $b, c = $c"