Modulus function in programming

Question

anyone can explain why 2%100=2 not 0? and 18%2=0.....?

Answer 1

At first, you need to understand what modulus does:
Take any integer N and any integer M
Now take N % M
The modulus simply takes as many times M from N as possible like this:

If(M <= N) N = N - M

So if M = 2 and N = 18 we get this:

[ a <= b ] means a is smaller than or equal to b

18 % 2 =
(2 <= 18) -> 18 - 2 = 18
(2 <= 16) -> 16 - 2 = 14
(2 <= 14) -> 14 - 2 = 12
(2 <= 12) -> 12 - 2 = 10
(2 <= 10) -> 10 - 2 = 8
(2 <= 8) -> 8 - 2 = 6
(2 <= 6) -> 6 - 2 = 4
(2 <= 4) -> 4 - 2 = 2
(2 <= 2) -> 2 - 2 = 0
(2 <= 0) is false so it will return 0

(100 <= 2) is false, so it will return 2

Answer 2

This is a simple divide which you learn in 2nd class.% it means remainder.so how we divide in when we are in 2nd standard.
Like this.
-------
100 | 2 |0
_______
0

So in this divide remainder is 0. I know you are thinking now but it's answer should be change if we take value in decimal.but remember that when you want to find the remainder with the help of % then python divide like when we do divide and find remainder in our 2nd class or you can say in our childhood.

Answer 3

thanx Roel 😍 i really understand this now and you too Maninder $ingh 💕