The following code example is taken from the book
C++23 - The Complete Guide
by Nicolai M. Josuttis,
Leanpub, 2026
The code is licensed under a
Creative Commons Attribution 4.0 International License.
// raw code
#include <iostream>
#include <bitset>
#include <limits>
#include <bit> // for std::byteswap()
int main()
{
unsigned x = 128 + 1; // value with first and 8th bit set
std::cout << std::bitset<std::numeric_limits<unsigned>::digits>{x} << '\n';
unsigned y = std::byteswap(x); // swap bytes
std::cout << std::bitset<std::numeric_limits<unsigned>::digits>{y} << '\n';
}