Warm Up - CAI711

Which of the following code segments is the proper declaration of a constant?

• Name = “Hamad”

• let name = “Hamad”

• var name = “Hamad”

• name : “Hamad”

• let “Hamad” = name

Which of the following is ignored by the playground and does not affect how your code run?

• Functions

• Loops

• Comment

• Variables

• Constants

let x = 2

let y = 3

let z = 4

let result = (x + y) * z

What is the value of result after running the above code?

• 12

• 14

• 16

• 18

• 20

Explain why would the below statement show an error?

Print(“ This Exam is Easy”)

• Braces are to be placed around the text instead of brackets

• The text should be surrounded by single quotes.

• Print keyword should start with a small p.

• Square brackets should be placed around the text.

• The Println keyword should replace the Print keyword

What is the output of the below code segment?

let coursecode = 74

print ("Welcome to App Development course code CSC\(coursecode) ")

coursecode = 75

• Welcome to App Development course code CSC74

• Welcome to App Development course code CSC\74

• Welcome to App Development course code CSCcoursecode

• Welcome to App Development course code CSC75

• Code will return an error message

Which of the following signs is used for multiplication?

• +

• x

• *

• $

• ^

Which of the following is an assignment in programming?

I. // Update the variable value

II. let numberOfSodas = 7

III. 4 + 6 + 9

• I only

• II only

• III only

• I and III only

• I, II and III

Which of the following code segments is the proper declaration of a constant?

• age = “ten”

• let age = “ten”

• var age = “ten”

• age : “ten”

• let “age” = ten

What is the output of the below code segment?

let coursecode = 74

print ("Welcome to App Development course code CSC\(coursecode) ")

• Welcome to App Development course code CSC74

• Welcome to App Development course code CSC\74

• Welcome to App Development course code CSCcoursecode

• Welcome to App Development course code CSC75

• Code will return an error message

Which of the following represents a type annotation in Swift?

• let number = Double = 20

• let number = 20 Double

• let number : Double = 20

• let Double (number) = 25

• let number ; Double = 20