Go through the functions tutorial
Recording of the class lesson here
Part 1: Starting from this sketch, make a function to draw eyes at specified positions.
Part 2: add a parameter that specifies the size (diameter or scale) of the eye you draw so it can be like this one
Make a function that calculates and returns the average of a series of numbers passed as an array:
let myNumbers = [3, 20, 45, 1, -20]; let a = average(myNumbers); print("The average is "+a);
The average is calculated by adding the values together and then dividing the total by the number of values (the length of the array).
Extra video lesson