Which of the following is the correct way to declare a constant integer named age with value 30 in Swift?

easy📝 Syntax Q12 of 15

Swift - Variables and Constants

Which of the following is the correct way to declare a constant integer named age with value 30 in Swift?

Alet age = 30

Bvar age = 30

Cconstant age = 30

Dconst age = 30

Step-by-Step Solution

Solution:

Step 1: Identify correct Swift syntax for constants
In Swift, let is used to declare constants, so let age = 30 is correct.
Step 2: Check other options
var declares a variable, not a constant. constant and const are not valid Swift keywords.
Final Answer:
let age = 30 -> Option A
Quick Check:
Use let for constants = B [OK]

Quick Trick: Use let for constants, var for variables [OK]

Common Mistakes:

Master "Variables and Constants" in Swift

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Swift Quizzes