When I run the following program :
object Problem {
def main(args: Array[String]) = {
val v = 53.toString
val w = v(0).toInt
println(w)
}
}
it prints out 53, instead of what I would have expected, 5. Can someone help me understand why?
UPDATE: The same thing happens if I use charAt instead of the array syntax
53 is the ASCII value for the character '5'. Try 63.toString and you'll see 54 after v(0).toInt.
Use .asDigit to convert a Char to its Int value. In other words, '5'.toInt == 53 but '5'.asDigit == 5.
Your code prints 53 because 53 is the ASCII value for the character '5'.
You will need to make the following changes if you want to see 5 as an answer. Hope it helps to clarify.
//Using charAt() should work, and print `5` as expected.
object Problem {
def main(args: Array[String]) = {
val v = 53.toString
val w = v.charAt(0)
println(w)
}
}
Similarly, removing the `toInt()` should also print '5'.
object Problem {
def main(args: Array[String]) = {
val v = 53.toString
val w = v(0)
print(w)
}
}
