Simple Caesar cipher program to encrypt and decrypt text files.
Use make or the task in the .vscode to build the project, then build/ccipher [encrypt | decrypt] <file path>.
Try with build/ccipher encrypt test_directory/sample.txt then build/ccipher decrypt test_directory/sample.txt. Reset the test directory with make clean.
$ build/ccipher encrypt test_directory/sample.txt
=> Wklv lv d vdpsoh whaw iloh iru hqfubswlrq.
build/ccipher decrypt test_directory/sample.txt
=> This is a sample text file for encryption.