a simple encoder and decoder using chracter substitution

• text -> binary -> my format
• my format -> binary -> text

encoder (-e flag)-> change ascii to binary -> look up the binary in the table and return the value decoder (-e flag)-> change ascii to binary -> look up the binary in the table with my mappings return the value

(encryption) i want to be able to enter a file name add -e for encrypt and have a file with the encrypted text (decryption) enter file name -d and have it spit out decrypted file