Modulus gives the remainder of the division of one number by another. For example 5%2 = 1. 2 fits into 5 two times (and 2x2=4), this leaves 1 as the remainder.
You can also use this equation:
a % b = a - ((int)(a / b)) * bcasting a/b as in integer basically represents the amount of times b can be fit into a.
5 % 7 = 5 - ((int)(5 / 7))* 7 = 5Examples of Modulus12 % 6 = 013 % 7 = 62 % 3 = 25 % 4 = 1Notice that with the form a % b = c. c is always between 0 and b-1. That is to say 0 <= c < b.This is a good way to constrain certain numbers to a range you might want or bin repeatable types of information.Some good uses may be:seconds or minutes are always between 0 and 60.There are always only 7 days in a week.