SystemInput.scala

import scala.io.StdIn._
object SystemInput extends App {
     def main(args:String){
            var x = false
                 while (!x) {
                          var name = readLine("Enter the name")
                                 println("Enter the score")
                                        var l = readDouble()
                                               println("you recieved "+(if (l>90) "Your Grade is A" else if(l>80) "Your Grade is B"
                                                        else if (l>70) "Your Grade is C" else  "Your Fail"))
                                                                  println("Do you want to continue 'yes' for False, 'no' for  True")
                                                                          x = readBoolean()
                                                                                 }
                                                                                    }
}