Name

### % (modulo)

Examples
```a = 5 % 4          # Sets 'a' to 1
b = 125 % 100      # Sets 'b' to 25
c = 285.5 % 140.0  # Sets 'c' to 5.5
d = 30.0 % 33.0    # Sets 'd' to 30.0
```
```#Keep line within sketch boundaries
a = 0
def draw():
background(200)
global a
a = (a + 1) % width  # 'a' increases between 0 and width
line(a, 0, a, height)
```
Description Calculates the remainder when one number is divided by another. For example, when 52.1 is divided by 10, the divisor (10) goes into the dividend (52.1) five times (5 * 10 == 50), and there is a remainder of 2.1 (52.1 - 50 == 2.1). Thus, 52.1 % 10 produces 2.1.

Note that when the divisor is greater than the dividend, the remainder constitutes the value of the entire dividend. That is, a number cannot be divided by any number larger than itself. For example, when 9 is divided by 10, the result is zero with a remainder of 9. Thus, 9 % 10 produces 9.

Modulo is extremely useful for keeping numbers within a boundary such as keeping a shape on the screen. (See the second example above.)
Syntax
```value1 % value2
```
Parameters
value1 int or float int or float
Related / (divide)
Updated on Fri Aug 16 21:51:57 2019.