[Solved] What is wrong with this Kotlin function?fun logMessage(): Unit { return 10 println("Logging") } — Ans: Returning an Int value in a Unit function is invalid | Kotlin

Kotlin - Data Types

What is wrong with this Kotlin function?

fun logMessage(): Unit {
    return 10
    println("Logging")
}

AReturning an Int value in a Unit function is invalid

BThe println statement after return is unreachable

CUnit functions cannot have a return statement

DThere is no error

Step-by-Step Solution

Solution:

Step 1: Check return type compatibility
The function declares return type Unit, so it cannot return an Int value like 10.
Step 2: Analyze other issues
While the println after return is unreachable, the main error is returning a value incompatible with Unit.
Final Answer:
Returning an Int in a Unit function is invalid -> Option A
Quick Check:
Unit functions cannot return non-Unit values [OK]

Quick Trick: Unit functions must not return values other than Unit [OK]

Common Mistakes:

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