def caesarCipher(s, k):
    encripted=''
    for i in s:
        if i.isalpha():
            if i.islower():
                encripted+=chr((ord(i)-ord('a')+k)%26+ord('a'))
            elif i.isupper():
                encripted+=chr((ord(i)-ord('A')+k)%26+ord('A'))
        else:
            encripted+=i
    return encripted