Google PlayGround

movie-ticket.kt

fun main() {
    val child = 5
    val adult = 28
    val senior = 87
    
    val isMonday = true
    
    println("The movie ticket price for a person aged $child is \$${ticketPrice(child, isMonday)}.")
    println("The movie ticket price for a person aged $adult is \$${ticketPrice(adult, isMonday)}.")
    println("The movie ticket price for a person aged $senior is \$${ticketPrice(senior, isMonday)}.")
    println("Price to 60 years on monday = \$${ticketPrice(60, true)}")
    println("Price to 61 years not on monday = \$${ticketPrice(61, false)}")
}

fun ticketPrice(age: Int, isMonday: Boolean): Int {
    if (age > 100 ) return -1
    
    return when {
        age >= 61 -> 20
        age >= 13 -> if (isMonday) 25 else 30
        else -> 15
    }
}