[Solved] What will be the output of the following Kotlin code?fun printMessage(): Unit { println("Hello, Kotlin!") } fun main() { val result = printMessage() println(result) } | Kotlin

Kotlin - Data Types

What will be the output of the following Kotlin code?

fun printMessage(): Unit {
    println("Hello, Kotlin!")
}

fun main() {
    val result = printMessage()
    println(result)
}

AHello, Kotlin!\nkotlin.Unit

BHello, Kotlin!\nnull

CHello, Kotlin!\n0

DHello, Kotlin!\n(no output)

Step-by-Step Solution

Solution:

Step 1: Understand the function return type
The function printMessage returns Unit, which is a singleton object in Kotlin representing no meaningful value.
Step 2: Analyze the output of println(result)
When printing result, which is Unit, Kotlin prints "kotlin.Unit" as its string representation.
Final Answer:
Hello, Kotlin!\nkotlin.Unit -> Option A
Quick Check:
Unit prints as 'kotlin.Unit' string [OK]

Quick Trick: Printing Unit shows 'kotlin.Unit' text [OK]

Common Mistakes:

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