Apple - Learn to code (revision 1)

Which of the following values would be best represented with a constant?

Which of the following would be best represented with a variable?

Which keyword is used to declare a constant?

Which keyword is used to declare a variable?

What is the value of myNumber at the end of the following code?

let x = 2

let y = 4

let z = 6

let myNumber = x + y + z

What is the value of myNumber at the end of the following code?

let x = 2

let y = 4

let z = 6

let myNumber = (x + y) * z

What is the operator called when it has an arithmetic symbol in front of the equals sign?

myScore += 100

Fill in the blanks below to declare a variable named "test" with the initial value "Hi", then assign it the value "I love Swift!".

__ test __ "Hi“

__ = "I love Swift!".

(a)  

Fill in the blanks using the options below to declare a constant named "name" and a variable called "age".

_ name = “David”

_ _ = "25"

(a)  

Fill in the blanks from the options below to indicate types for the constants.

let meaningOfLife = 42 // _

let pi = 3.14159 // _

(a)