[Solved] Find the error in this Kotlin code using when without argument:val y = 3 val result = when { y > 5 -> println("Greater than 5") y println("Less than 5") } | Kotlin

Kotlin - Control Flow as Expressions

Find the error in this Kotlin code using when without argument:

val y = 3
val result = when {
  y > 5 -> println("Greater than 5")
  y < 5 -> println("Less than 5")
}

AMissing else branch for unmatched cases

BIncorrect use of parentheses after when

CConditions must be constants, not expressions

DCannot use println inside when

Step-by-Step Solution

Solution:

Step 1: Check when branches
The code has two conditions but no else branch to handle all other cases.
Step 2: Understand Kotlin requirement
When used without argument, Kotlin requires an else branch to cover all possibilities or the compiler errors about non-exhaustive when.
Final Answer:
Missing else branch for unmatched cases -> Option A
Quick Check:
Always add else branch [OK]

Quick Trick: Always include else branch in when without argument [OK]

Common Mistakes:

MISTAKES

Master "Control Flow as Expressions" in Kotlin

9 interactive learning modes - each teaches the same concept differently

More Kotlin Quizzes

Find the error in this Kotlin code using when without argument: