What will happen when this SwiftUI code runs? struct ContentView: View { @State private var count = 0 var body: some View { VStack { Button("Tap me") { count += 1 } Text("Count: \(count)") } } }

medium📝 Predict Output Q5 of 15

iOS Swift - SwiftUI Basics

AButton increments count but Text does not update

BButton does nothing and Text shows Count: 0 always

CApp crashes due to missing VStack or container

DButton increments count and Text updates to show new count

Step-by-Step Solution

Solution:

Step 1: Understand @State usage
@State allows the view to update when the variable changes, so count updates trigger UI refresh.
Step 2: Check Button and Text behavior
Button increments count, and Text shows the updated count dynamically.
Final Answer:
Button increments count and Text updates to show new count -> Option D
Quick Check:
@State triggers UI update = A [OK]

Quick Trick: @State variables update UI when changed in SwiftUI [OK]

Common Mistakes:

Forgetting @State causes no UI update
Assuming missing container causes crash
Thinking Text won't update automatically

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What will happen when this SwiftUI code runs? struct ContentView: View { @State private var count = 0 var body: some View { VStack { Button("Tap me") { count += 1 } Text("Count: \(count)") } } }

Step 1: Understand @State usage

Step 2: Check Button and Text behavior

Final Answer:

Quick Check:

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