val age:Int = 45
var myText:String = age.toString()
// myText = "45"

var myText:String = ""

myText = String.format("%02d", 1)
// myText = 01

myText = String.format("%02d", 7)
// myText = 07

myText = String.format("%02d", -3)
// myText = -3

myText = String.format("%02d", 15)
// myText = 15

myText = String.format("%02d", 34)
// myText = 34

myText = String.format("%02d", 179)
// myText = 179