[Solved] Which of the following Kotlin function declarations will cause a syntax error? — Ans: fun multiply(x: Int = 2, y: Int) = x * y | Kotlin

Kotlin - Functions

Which of the following Kotlin function declarations will cause a syntax error?

Afun add(x: Int, y: Int = 5) = x + y

Bfun printMessage(message = "Hi") { println(message) }

Cfun multiply(x: Int = 2, y: Int) = x * y

Dfun greet(name: String = "User") { println("Hello, $name") }

Step-by-Step Solution

Solution:

Step 1: Understand parameter order rules
Parameters with default values must come after parameters without defaults.
Step 2: Analyze fun multiply(x: Int = 2, y: Int) = x * y
fun multiply(x: Int = 2, y: Int) = x * y has a default parameter before a non-default one, causing syntax error.
Final Answer:
fun multiply(x: Int = 2, y: Int) = x * y -> Option C
Quick Check:
Default params must follow non-defaults [OK]

Quick Trick: Put default parameters after non-default ones [OK]

Common Mistakes:

MISTAKES

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Which of the following Kotlin function declarations will cause a syntax error?