Which of the following is the correct syntax to declare a variadic parameter named 'numbers' of type Int in Swift?

easy📝 Syntax Q3 of 15

Swift - Functions

Afunc sum(numbers: Int[]) {}

Bfunc sum(numbers: [Int]) {}

Cfunc sum(numbers: Int*) {}

Dfunc sum(numbers: Int...) {}

Step-by-Step Solution

Solution:

Step 1: Recall Swift variadic syntax
Variadic parameters use three dots (...) after the type.
Step 2: Check each option
Only func sum(numbers: Int...) {} uses 'Int...' which is correct syntax.
Final Answer:
func sum(numbers: Int...) {} -> Option D
Quick Check:
Variadic syntax = type followed by ... [OK]

Quick Trick: Use three dots (...) after type for variadic [OK]

Common Mistakes:

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