Green shop

fun main(args: Array<String>) {


    var branch = arrayListOf<Double>()
    var item = arrayListOf<String>()

    var no =1
    var sum =0.0


    println("Enter Number branch ")
    var bra = readLine()!!.toInt()

    println("Enter the number of purchases")
    var items = readLine()!!.toInt()

    for (i in 1..items)
    {


        println("Enter the total value "+no)
        branch[i]= readLine()!!.toDouble()
        sum+=branch[i]
        no++

    }


    when(bra) {
        1 -> {





            var dec =sum- sum *.10

            if (sum >= 100)
            {
                for (i in 1..items)
                {
                    println("Item "+item[i]+" | "+"Price "+branch[i])

                }
                println( )
                println("Total invoice before discount $sum")
                println("Total invoice after discount $dec")
                var tax=tax(sum)
                println("Total invoice after Tax $tax")
                println( )

            }

            else println("Total invoice before discount $sum")
            var tax=tax(sum)
            println("Total invoice after Tax $tax")



        }
        2 -> {






            for (i in 0..items)
            {
                println("Item "+item[i]+" | "+"Price "+branch[i])

            }
            println( )
            println("Total invoice  $sum")

        }
        3 -> {





            var dec = sum - 50

            if (sum > 500)
            {
                for (i in 0..items)
                {
                    println("Item "+item[i]+" | "+"Price "+branch[i])

                }
                println( )
                println("Total invoice before discount $sum")
                println("Total invoice after discount $dec")
                var tax=tax(sum)
                println("Total invoice after Tax $tax")

            }

            else println("Total invoice before discount $sum")
            var tax=tax(sum)
            println("Total invoice after Tax $tax")
        }
    }

}
fun tax(x: Double) : Double {
    return x*.15
}