凯撒密码 

s = input('文明:')
for c in s:
    print(chr(ord(c)+3),end='')

s = input('密文:')
for c in s:
    print(chr(ord(c)-3),end='')

posted on 2018-05-23 20:48  八达岭  阅读(168)  评论(0)    收藏  举报