Sample.kt

package starting

fun main() {
    checkNegativeNumber(12.4f)

    checkSumNumber()

    val marco = Person("Marco", "Rossi", 23)
    marco.age = 12
    println(marco.getFormattedFullName())
}

fun checkNegativeNumber(number: Float) {

    when {
        number < 0.0 -> {
            println("$number is a negative number.")
        }
        number > 0.0 -> println("$number is a positive number.")
        else -> println("$number is 0.")
    }
}

fun checkSumNumber() {

    val num = 10
    var sum = 0

    for (i in 1..num) {
        // sum = sum+i;
        sum += i
    }

    println("Sum = $sum")
}

class Person(
   val name: String,
   val surname: String,
   var age: Int
) {
    fun getFormattedFullName() = "$name $surname".toUpperCase()
}