this program is a c++ reference of this ariticle
Sudoku Encode is a program that uses Sudoku to encrypt your message.
First, compile the sudoku_encode.cpp file then follow the instruction shown in your terminal,type in the message that you want to encrypt, then waits a few seconds, your ciphertext is done!
The encrypted messsage will be saved in "encode.txt" file (without original text).
Similarly, create a file name "decode.txt", paste the ciphertext in decode.txt, and then run the main program to decode it.
Note that the decrypted text will have no spaces and non alphabetic characters(including numbers).