#include <stdio.h>
#include "rot26.h"
int main() {
const char *hello = "hello!";
printf("data before: %s\n", hello);
const char *ciphered = rot26_cipher(hello);
printf("ciphered: %s\n", ciphered);
const char *deciphered = rot26_decipher(ciphered);
printf("deciphered: %s\n", deciphered);
return 0;
}