[Solved] Which of the following is a valid use of when expression without an argument in Kotlin? — Ans: when { x > 10 -> println("Greater") else -> println("Smaller") } | Kotlin

Kotlin - Control Flow as Expressions

Which of the following is a valid use of when expression without an argument in Kotlin?

Awhen x { > 10 -> println("Greater") else -> println("Smaller") }

Bwhen { x > 10 -> println("Greater") else -> println("Smaller") }

Cwhen (x) { x > 10 -> println("Greater") else -> println("Smaller") }

Dwhen { x == 10, x == 20 -> println("Equal") }

Step-by-Step Solution

Solution:

Step 1: Understand when without argument syntax
When expression without argument uses boolean conditions directly in branches.
Step 2: Check each option for correct syntax
when { x > 10 -> println("Greater") else -> println("Smaller") } correctly uses when without argument and boolean conditions. when (x) { x > 10 -> println("Greater") else -> println("Smaller") } incorrectly uses argument with conditions. when x { > 10 -> println("Greater") else -> println("Smaller") } has invalid syntax. when { x == 10, x == 20 -> println("Equal") } has invalid syntax (comma-separated values not allowed without subject).
Final Answer:
when { x > 10 -> println("Greater") else -> println("Smaller") } -> Option B
Quick Check:
when without argument = when { x > 10 -> println("Greater") else -> println("Smaller") } [OK]

Quick Trick: Use when without argument for boolean conditions [OK]

Common Mistakes:

MISTAKES

Master "Control Flow as Expressions" in Kotlin

9 interactive learning modes - each teaches the same concept differently

More Kotlin Quizzes

Which of the following is a valid use of when expression without an argument in Kotlin?