Why Does 0 % 5 Return 0?

I am making a game of pong right now, and I want the ball to speed up every 5 hits, but when I run the ball just starts speeding off in its starting direction. It runs fine without

Solution 1:

Division is defined so that the following is always true

n = q × d + r

where

• n is the numerator (or dividend),
• d != 0 is the denominator (or divisor),
• q is the quotient, and
• r > 0 is the remainder.

(This holds for positive and negative values; q is positive if n and d have the same sign and negative otherwise. r is defined to be always positive.)

In Python, n/d == q and n % d == r. If n is 0, then q must also be 0, in which case r must be 0 as well—all independent of the value of d.

(Off-topic, but note that this also captures the problem with division by 0: for non-zero d, q and r are uniquely determined; for d = 0, any value of q will satisfy the equation for r = n.

Solution 2:

Why does 0 % 5 return 0?

Because:

Zero divided by five is zero, remains zero.

0 % 5 = 0
12 % 5 = 2

Solution 3:

a % n is the same as a - (n * int(a/n)). 0/5 equals 0 because 5 goes in to 0, 0 times. 0 * 5 is 0. 0 minus 0 is 0.

Solution 4:

Try if self.num_hits / 5 == 0:

Solution 5:

0 % 5 = 0
1 % 5 = 1
2 % 5 = 2
3 % 5 = 3
4 % 5 = 4
5 % 5 = 0
6 % 5 = 1
7 % 5 = 2
...