[Solved] What will be the output of this Kotlin code?fun main() { val text: String? = null println(text?.length ?: "No text") } | Kotlin

Kotlin - Null Safety

What will be the output of this Kotlin code?

fun main() {
    val text: String? = null
    println(text?.length ?: "No text")
}

A0

BCompilation error

Cnull

DNo text

Step-by-Step Solution

Solution:

Step 1: Understand safe call operator usage
The text?.length safely accesses length only if text is not null.
Step 2: Evaluate the Elvis operator
Since text is null, text?.length is null, so the Elvis operator ?: returns "No text".
Final Answer:
No text -> Option D
Quick Check:
Safe call + Elvis operator returns fallback [OK]

Quick Trick: Safe call with Elvis returns fallback if null [OK]

Common Mistakes:

MISTAKES

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