math_operations.md

Chapter 3: Math Operations

Math in Vyper is pretty straightforward. The following operations are the same as in most programming languages:

• Addition: x + y
• Subtraction: x - y
• Multiplication: x * y
• Division: x / y
• Modulus / remainder: x % y (for example, 13 % 5 is 3, because if you divide 5 into 13, 3 is the remainder)

Vyper also supports an exponential operator (i.e. "x to the power of y", x^y):

# equal to 5^2 = 25
uint256 x = 5 ** 2

Put it to the test

To make sure our Pokemon's DNA is only 16 characters, let's make another constant uint256 equal to 10^16. That way we can later use the modulus operator % to shorten an integer to 16 digits.

1. Create a constant uint256 named DNA_MODULUS, and set it equal to 10 to the power of DNA_DIGITS.

** Template **

embedded-code

** Solution **

embedded-code-final

** Previous Chapter Solution **

embedded-code-previous