Using C++

Encrypt a file in.txt containing plaintext to a file out.txt containing ciphertext using shift . Flag -e here refers to encryption. $ cf -e in.txt out.txt Example Consider f1.txt HELLO WORLD THIS IS AMAZING WHY IS THIS SO AMAZING I HAVE NO IDEA 11231 After running the following command $ ./cf -e 3 f1.txt f2.txt File f2.txt looks like KHOOR ZRUOG WKLV LV DPDCLQJ ZKB LV WKLV VR DPDCLQJ L KDYH QR LGHD 11231