Swift - Variables and Constants
Which of the following Swift code snippets correctly declares a constant integer named
count with an explicit type annotation and value 5?Which of the following Swift code snippets correctly declares a constant integer named count with an explicit type annotation and value 5?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Check constant declaration syntax
let count = 5uses type inference, but explicit type annotation requireslet count: Int = 5.Step 2: Validate type and value
let count: Int = 5explicitly declarescountas an integer constant with value 5, which is correct.Final Answer:
let count: Int = 5 -> Option BQuick Check:
Explicit type constant = let count: Int = 5 [OK]
Quick Trick: Use let with type annotation for explicit constant types [OK]
Common Mistakes:
- Using var instead of let
- Assigning string instead of integer
- Omitting type when explicit type is required
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