[Solved] What is the output of this Swift code?func multiply(_ a: Int, _ b: Int) -> Int { return a * b } print(multiply(3, 4)) | Swift

Swift - Functions

What is the output of this Swift code?

func multiply(_ a: Int, _ b: Int) -> Int {
    return a * b
}

print(multiply(3, 4))

A12

Bmultiply(3, 4)

CError: Missing argument labels

D7

Step-by-Step Solution

Solution:

Step 1: Understand function parameters with underscore
Both parameters have underscores, so argument labels are omitted when calling.
Step 2: Calculate the function result
Calling multiply(3, 4) returns 3 * 4 = 12, which is printed.
Final Answer:
12 -> Option A
Quick Check:
3 * 4 = 12 [OK]

Quick Trick: Underscore means call without labels, so multiply(3,4) works [OK]

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