Another demo for the C++ hexdump of previous gist (need the hxd.hpp)

fl.cpp

/* Compile with $ g++ -o fl fl.cpp
 * Project Crew™ 12/28/2025
 */

#include <iostream>
#include <iomanip>
using namespace std;

#include "fl.hpp"
#include "hxd.hpp"

#define MYB     "Lorem ipsum dolor sit amet, " \
                "consectetuer adipiscing elit."

int
main()
{
    unsigned char myb[] = MYB, n = W;
    unsigned long int c, mybsize = sizeof(myb);
    /* register */ uint8_t t;

/* turn the string to unprintable junk chars */
    for(c = 0; c < mybsize - 1; c++)
    {
//        cout << c << ' ';
        t = myb[c];                     // take each char and ...
        t += A;                         // add (pretty obvious)
        t = (t << S) | (t >> (N - S));  // bitwise rotate
        t ^= n;                         // ...     NOT
        t -= A;                         // subtract
        myb[c] = t;                     // store back to array
    }

/* take a lQQk at what we got */
    hxd(myb, mybsize);
    
    cout << "\n\n";
    cout << ' ' << myb << endl;
}

fl.hpp

#define A 3
#define N 8
#define S 4
#define W -1