Source Code

fun main() {
    val start = 15
    val end = 25

    val sum = calculateSum(start, end)
    println("Sum of numbers between $start and $end: $sum")
}

fun calculateSum(start: Int, end: Int): Int {
    var sum = 0

    for (num in start..end) {
        sum += num
    }

    return sum
}