[Solved] What will be printed by this Kotlin code?fun printInfo(value: Any) { when (value) { is Double -> println(value * 2) is String -> println(value.... | Kotlin

Kotlin - Control Flow as Expressions

What will be printed by this Kotlin code?

fun printInfo(value: Any) {
  when (value) {
    is Double -> println(value * 2)
    is String -> println(value.reversed())
    else -> println("Unsupported")
  }
}
printInfo("Kotlin")

AUnsupported

Bniltok

CKotlin

DError

Step-by-Step Solution

Solution:

Step 1: Identify the input
The function is called with a String value "Kotlin".
Step 2: Check the when branches
Since value is a String, the is String branch executes.
Step 3: Evaluate output
value.reversed() returns "niltok" (case sensitive).
Final Answer:
niltok -> Option B
Quick Check:
Smart cast allows calling reversed() on String [OK]

Quick Trick: Smart cast enables calling type-specific methods [OK]

Common Mistakes:

MISTAKES

Confusing reversed string output
Expecting uppercase or unchanged string
Ignoring smart cast effect

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More Kotlin Quizzes

What will be printed by this Kotlin code?

Step 1: Identify the input

Step 2: Check the `when` branches

Step 3: Evaluate output

Final Answer:

Quick Check:

Want More Practice?

What will be printed by this Kotlin code?

Step 1: Identify the input

Step 2: Check the when branches

Step 3: Evaluate output

Final Answer:

Quick Check:

Want More Practice?

Step 2: Check the `when` branches