[Solved] What will be printed by this Swift code?let multiply = { (a: Int, b: Int) -> Int in return a * b } print(multiply(3, 4)) | iOS Swift

iOS Swift - Swift Language Essentials

What will be printed by this Swift code?

let multiply = { (a: Int, b: Int) -> Int in
  return a * b
}
print(multiply(3, 4))

A34

B7

C12

DError

Step-by-Step Solution

Solution:

Step 1: Understand closure parameters and return
The closure takes two Ints and returns their product.
Step 2: Calculate multiply(3, 4)
3 * 4 equals 12, so print outputs 12.
Final Answer:
12 -> Option C
Quick Check:
3 times 4 = 12 [OK]

Quick Trick: Closures return calculated values like functions [OK]

Common Mistakes:

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What will be printed by this Swift code?