[Solved] What will be the output of this Kotlin code? fun checkType(x: Any) { if (x is Int) { println(x + 5) } else { println("Not an Int") } } checkType(10) checkType("Hello") | Kotlin

Kotlin - Variables and Type System

What will be the output of this Kotlin code?

fun checkType(x: Any) {
    if (x is Int) {
        println(x + 5)
    } else {
        println("Not an Int")
    }
}

checkType(10)
checkType("Hello")

AError at runtime

B10 Not an Int

C15 Hello5

D15 Not an Int

Step-by-Step Solution

Solution:

Step 1: Analyze the first call checkType(10)
10 is an Int, so inside the if block, x + 5 equals 15, printed as "15".
Step 2: Analyze the second call checkType("Hello")
"Hello" is not an Int, so else block runs printing "Not an Int".
Final Answer:
15 Not an Int -> Option D
Quick Check:
Int check prints sum, else prints message = A [OK]

Quick Trick: If is true, use variable as that type inside block [OK]

Common Mistakes:

MISTAKES

Assuming string "Hello" can be added to 5
Expecting runtime error instead of else output
Confusing output order

Master "Variables and Type System" in Kotlin

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

More Kotlin Quizzes

What will be the output of this Kotlin code?

Step 1: Analyze the first call `checkType(10)`

Step 2: Analyze the second call `checkType("Hello")`

Final Answer:

Quick Check:

Want More Practice?

What will be the output of this Kotlin code?

Step 1: Analyze the first call checkType(10)

Step 2: Analyze the second call checkType("Hello")

Final Answer:

Quick Check:

Want More Practice?

Step 1: Analyze the first call `checkType(10)`

Step 2: Analyze the second call `checkType("Hello")`