KINDS OF FUNCTION 3

import java.util.Scanner

var asset: Double? = null
var estimation: Double? = null
var start: Int? = null
var end: Int? = null
var texts = Scanner(System.`in`)

fun main() {

    println("Depreciation : Straight Line Method")
    print("Cost of Bought: ")
    asset = texts.nextDouble()
    println("Period of Depreciation(Year): ")
    print("Begin of Year (Integer): ")
    start = texts.nextInt()
    print("End of Year (Integer): ")
    end = texts.nextInt()
    print("Residual value(Float): ")
    estimation = texts.nextDouble()
    StraightLine(asset!!, start!!, end!!, estimation!!)
}

fun StraightLine(asset: Double, start: Int, end: Int, estimation: Double): Double {
    if (asset > 0 && start > 0 && end > 0) {
        var depreciation: Double = ((asset - estimation) / end)
        println(" Depreciation/ Year : ${depreciation.toLong()}")
        println("|Year|      Amount   -   Accummulation  =    Resid  |")
    } else {
        print(" Minimal Integer: 1")
    }

    var accummulation: Double = (start.toDouble() / end.toDouble()) * (asset - estimation)
    var resid: Double = asset - accummulation
    println("$start   ${asset.toLong()} - ${accummulation.toLong()} = ${resid.toLong()}")
    return resid
}
// METHOD(FUNCTION HAS RETURN)
// Pray 4 Uyghur: https://bylinetimes.com/2020/08/24/death-is-everywhere-millions-more-uyghurs-missing/