[Solved] Find the mistake in this Swift code:func multiply(_ a: Int, _ b: Int) -> Int { return a * b } let operation: (Int, Int) -> Int = multiply print(operation) | Swift

Swift - Functions

Find the mistake in this Swift code:

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

AMissing parentheses when calling operation

BPrinting 'operation' prints the function reference, not a result

CCannot assign multiply to operation variable

DFunction multiply has wrong return type

Step-by-Step Solution

Solution:

Step 1: Understand variable assignment
'operation' correctly stores the function 'multiply'.
Step 2: Calling vs printing function
Printing 'operation' prints the function reference, not the result. To get output, call with parameters like 'operation(2,3)'.
Final Answer:
Missing parentheses when calling operation -> Option A
Quick Check:
Call function with () to get result = B [OK]

Quick Trick: Use parentheses to call function stored in variable [OK]

Common Mistakes:

Master "Functions" in Swift

9 interactive learning modes - each teaches the same concept differently

More Swift Quizzes

Find the mistake in this Swift code: