TITLE: How many digits does the integer zero have?
QUESTION [20 upvotes]: Should zero be classified as having no digits, or 1 digit?

REPLY [2 votes]: In term of storage for computation purposes zero takes the size of a digit. However, the correct answer is probably the number system you are dealing with. I am not sure if there does exist a number system without zero in this modern era but there are several number systems such as binary and decimal number system in which zero is considered as a digit.