Arithmetic operators in Kotlin - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

What is the output of this Kotlin code?

Consider the following Kotlin code snippet. What will it print when run?

Kotlin

fun main() {
    val a = 10
    val b = 3
    println(a / b)
}

A 3

B 3.3333333

C 3.0

D 4

💡 Hint

Remember that dividing two integers in Kotlin results in an integer division.

In Kotlin, dividing two Int values uses integer division, so 10 / 3 equals 3, discarding the remainder.

❓ Predict Output

intermediate

What is the output of this Kotlin code with mixed types?

What will this Kotlin program print?

Kotlin

fun main() {
    val x = 7
    val y = 2.0
    println(x / y)
}

A 3

B 3.50

C 3.0

D 3.5

💡 Hint

When dividing an Int by a Double, Kotlin promotes the Int to Double.

Since 'y' is a Double, 'x' is converted to Double and floating-point division is performed, resulting in 3.5.

❓ Predict Output

advanced

What is the output of this Kotlin code using the modulus operator?

Analyze the following Kotlin code and select the output it produces.

Kotlin

fun main() {
    val a = 17
    val b = 5
    println(a % b)
}

A 1

B 3

C 2

D 0

💡 Hint

The modulus operator (%) gives the remainder after division.

17 divided by 5 is 3 with a remainder of 2, so 17 % 5 equals 2.

❓ Predict Output

advanced

What is the output of this Kotlin code with mixed arithmetic and assignment?

What will be printed by this Kotlin program?

Kotlin

fun main() {
    var n = 8
    n += 3 * 2
    println(n)
}

A 14

B 16

C 22

D 11

💡 Hint

Remember the order of operations: multiplication before addition.

3 * 2 equals 6, then n += 6 means n = 8 + 6 = 14.

❓ Predict Output

expert

What is the output of this Kotlin code with integer overflow?

Consider this Kotlin code snippet. What will it print?

Kotlin

fun main() {
    val maxInt = Int.MAX_VALUE
    val result = maxInt + 1
    println(result)
}

A OverflowException

B -2147483648

C 2147483647

D 2147483648

💡 Hint

Adding 1 to Int.MAX_VALUE causes integer overflow in Kotlin's Int type.

Kotlin's Int type is a 32-bit signed integer. Adding 1 to the maximum value wraps around to the minimum value (-2147483648).