[Solved] Identify the error in this Kotlin code:fun main() { val number = 10 number = 20 println(number) } — Ans: Cannot reassign a val variable | Kotlin

Kotlin - Basics and JVM Runtime

Identify the error in this Kotlin code:

fun main() {
    val number = 10
    number = 20
    println(number)
}

AMissing semicolon after println

BWrong function name

CCannot reassign a val variable

DVariable type not declared

Step-by-Step Solution

Solution:

Step 1: Understand val vs var in Kotlin
val declares a read-only variable that cannot be reassigned.
Step 2: Check reassignment in code
The code tries to assign 20 to number after declaring it as val, causing an error.
Final Answer:
Cannot reassign a val variable -> Option C
Quick Check:
val = read-only, no reassignment [OK]

Quick Trick: val means constant, cannot change value later [OK]

Common Mistakes:

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