vigenere and space character

Question

Pls help me. My code: https://gist.github.com/morozded/774d9d3c4575efee661d6b21290b0b97 Result my code:

~/workspace/pset2/vegnere/ $ ./vigenere bacon
plaintext: Meet me at the park at eleven am
ciphertext: Neghneogtjsqatybtsyfvgbbm

How do I work with space character? Sorry for my English.

Answer 1

Any non-letter should be returned as-is, not changed at all.

Note that copying a non-letter won't affect your position inside the keyword!

plaintext:     Meet me at the park at eleven am
effective key: baco nb ac onb acon ba conbac on
ciphertext:    Negh zf av huf pcfx bt gzrwep oz