Apple Swift Coding I - Lesson 7 - 10

Which line is declaring a variable?

• name = "Johnny"

• let name = "Johnny"

• let "Johnny" = name

• var name = "Johnny"

What best describes an algorithm?

• A step by step series of operations

• Only calculations that use advance mathematics

• The computer equivalent of rhythm

• The same thing as an identifier

What is API?

• A safety check to make sure programs work

• A rating given to experienced programmers

• A tool for writing programs

• The set of functions you can use with a particular programming area

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 =+

What is the value of score after this code:

Var score = 2

score = score + 1

• 2

• 3

• 1

• This code will not work

Which line is declaring a constant?

• name = "Johnny"

• let name = "Johnny"

• let "Johnny" = name

• var name = "Johnny"

What type is foo in the code below:

var foo: SolarPhenomenon

• Interstellar

• Not possible to tell

• SolarPhenomenon

• Variable

What is the value of score after this code:

var score =0

score +=1

score+=1

• 0

• 1

• 2

• This code will not work

How do you pass a value out of a function?

• Assigning a value to one of the arguments

• The value of the last line of the function is passed out automatically

• Using a return statement

• You can't pass a value out of a function.

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 would 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