Caesar encoder and decoder
Source = Plaintext
Process
Result = Ciphertext
DRO BOCMEO WSCCSYX GSVV ECO K ROVSMYZDOB, KBBSFSXQ KD XYYX DYWYBBYG. LO BOKNI DY LBOKU YED KC CYYX KC IYE ROKB DRBOO LVKCDC YX K GRSCDVO. S'VV LO GOKBSXQ K BON KBWLKXN.
Encode
Decode