Which of the following function declarations correctly uses an argument label to and a parameter name recipient?

easy📝 Conceptual Q2 of 15

Swift - Functions

Which of the following function declarations correctly uses an argument label to and a parameter name recipient?

Afunc sendMessage(recipient to: String) { print("Sending to \(to)") }

Bfunc sendMessage(to recipient: String) { print("Sending to \(recipient)") }

Cfunc sendMessage(to: recipient String) { print("Sending to \(recipient)") }

Dfunc sendMessage(to recipient String) { print("Sending to \(recipient)") }

Step-by-Step Solution

Solution:

Step 1: Recall Swift syntax for argument labels and parameter names
The correct syntax is: argumentLabel parameterName: Type. For example, to recipient: String.
Step 2: Check each option for correct syntax
func sendMessage(to recipient: String) { print("Sending to \(recipient)") } matches the syntax. Options A, C, and D have incorrect order or missing punctuation.
Final Answer:
func sendMessage(to recipient: String) { print("Sending to \(recipient)") } -> Option B
Quick Check:
Correct argument label syntax = func sendMessage(to recipient: String) { print("Sending to \(recipient)") } [OK]

Quick Trick: Argument label comes before parameter name with colon [OK]

Common Mistakes:

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