How can I read an int to use in a for loop?

Question

How can I read an integer value from the user to use in the range of a for loop?

fun main() {
    var n = readLine()
    for (i in 1..n) {
      var (a, b) = readLine()!!.split(' ')
      println(a.toInt() + b.toInt())
    }
}

Answer 1

You can use the String.toInt() function to achieve this (the same thing that you doing in later lines).

Like this:

fun main() {
    val n = readLine()!!.toInt()
    for (i in 1..n) {
      val (a, b) = readLine()!!.split(' ')
      println(a.toInt() + b.toInt())
    }
}

Also, you can replace your var s with val s since they are not changed anywhere.