Bird
0
0

Which of the following is the correct way to declare a Boolean variable named isActive with value true in Swift?

easy📝 Syntax Q3 of 15
iOS Swift - Swift Language Essentials
Which of the following is the correct way to declare a Boolean variable named isActive with value true in Swift?
Avar isActive: Bool = true
Blet isActive = 1
Cvar isActive: Int = 1
Dlet isActive = "true"
Step-by-Step Solution
Solution:

  1. Step 1: Understand Boolean declaration

    Boolean variables use Bool type and true/false values without quotes.

  2. Step 2: Check each option

    var isActive: Bool = true declares a Bool variable with true correctly.

  3. Final Answer:

    var isActive: Bool = true -> Option A

  4. Quick Check:

    Boolean declaration = var isActive: Bool = true [OK]
Quick Trick: Bool values are true or false without quotes [OK]
Common Mistakes:
  • Using quotes around true/false
  • Using Int instead of Bool
  • Using let with wrong type

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More iOS Swift Quizzes
State Management in SwiftUI - @Published properties - Quiz 1easy Swift Language Essentials - Error handling (try, catch, throw) - Quiz 9hard SwiftUI Basics - Spacer and padding - Quiz 15hard SwiftUI Basics - VStack, HStack, ZStack - Quiz 2easy SwiftUI Layout - ScrollView - Quiz 9hard SwiftUI Layout - GeometryReader for adaptive layouts - Quiz 15hard SwiftUI Layout - GeometryReader for adaptive layouts - Quiz 3easy User Input and Forms - Stepper - Quiz 8hard User Input and Forms - Form container - Quiz 13medium User Input and Forms - TextField - Quiz 10hard