RosettaCodeData/Task/Conditional-structures/Kotlin/conditional-structures.kotlin

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// version 1.0.6
fun main(args: Array<String>) {
// conventional 'if/else if/else' statement
if (args.isEmpty()) println("No arguments were supplied")
else if (args.size == 1) println("One argument was supplied")
else println("${args.size} arguments were supplied")
print("Enter an integer : ")
val i = readLine()!!.toInt()
// 'when' statement (similar to 'switch' in C family languages)
when (i) {
0, 1 -> println("0 or 1")
in 2 .. 9 -> println("Between 2 and 9")
else -> println("Out of range")
}
// both of these can be used as expressions as well as statements
val s = if (i < 0) "negative" else "non-negative"
println("$i is $s")
val t = when {
i > 0 -> "positive"
i == 0 -> "zero"
else -> "negative"
}
println("$i is $t")
}