[Solved] Identify the error in this Kotlin code snippet:val obj: Any = 10 val str: String = obj as? String println(str) | Kotlin

Kotlin - Null Safety

Identify the error in this Kotlin code snippet:

val obj: Any = 10
val str: String = obj as? String
println(str)

AMissing explicit type declaration for obj

BSafe cast operator is used incorrectly

CCannot assign nullable type to non-nullable variable

DNo error, code runs fine

Step-by-Step Solution

Solution:

Step 1: Analyze variable types and cast
The safe cast as? returns a nullable type, but str is declared non-nullable String.
Step 2: Identify type mismatch error
Assigning nullable result to non-nullable variable causes a compilation error.
Final Answer:
Cannot assign nullable type to non-nullable variable -> Option C
Quick Check:
Safe cast returns nullable, must assign to nullable variable = A [OK]

Quick Trick: Safe cast returns nullable; assign to nullable variable [OK]

Common Mistakes:

MISTAKES

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