第 13 题 单选题
阅读下面代码,正确的输出是( )
s ='Hello NOC'
ans ="
for c in s:
if ord(c)>=ord('A')and ord(c)<= ord(Z'):
ans+=chr(ord(c)+ 3-ord('A')+ ord('a'))
elif ord(c)>=ord('a')and ord(c)<= ord(z'):
ans +=chr(ord(c) + 3)
print(ans)
A.khoorQRF
B.khoor QRF
C.khoorgrf
D.khoor grf