Lesson 8 - Apple Swift Coding 1

Which line is declaring a constant?

• name = "Johnny"

• let name = "Johnny"

• let "Johnny" = name

• var name = "Johnny"

Which line is declaring a variable?

• name = "Johnny"

• let name = "Johnny"

• let "Johnny" = name

• var name = "Johnny"

What is the value of score after this code:

var score = 2

score = score + 1

• 2

• 3

• 1

• This code will not work

What is the value of score after this code?

var score = 0

score +=1

score +=1

• 0

• 1

• 2

• This code will not work

You're writing a program for scoring a word game. Each letter has a value between 1 and 10 and players earn points for making words. What should be stored as a constant in the program?

• The scores per letter

• The list of words the player has made

• The player's score

• Nothing

What is the value of message after this code?

var message = " "

message + ="Hello"

message ++"World"

• "Hello"

• "World"

• Hello World

• "HelloWorld"

What is wrong with this code?

let score = 15

score +=5

• Nothing

• The scores are wrong

• Score is a constant and cannot be changed

• += should be =+