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Alison King
iOS Development with Swift Techdegree Student 424 PointsArithmetic Operators
in the following calculation:
let someOperation = 20 + 400 % 10 / 2 - 15
is the order of the arithmetic operators 420 divided by 5 (ie 10 over 2) and then minus 15? or 42 divided by -13 (ie 2-15)?
What are the rules as in algebra there would be brackets to specify order of the calculations
// Enter your code below
let value = 200
let divisor = 5
let someOperation = 20 + 400 % 10 / 2 - 15
let anotherOperation = 52 * 27 % 200 / 2 + 5
// Task 1 - Enter your code below
let result: Double = value % divisor
// Task 2 - Enter your code below
1 Answer
Alex Koumparos
Python Development Techdegree Student 36,887 PointsHi Alison,
Apple has a page showing operator precendence.
As per that article, the order of operations is:
10 / 2 // 5
400 % 5 // 0
20 + 0 // 20
20 - 15 // 5
Like in regular algebra you can use parentheses to override the built-in operator precedence.
Hope that helps
Cheers
Alex