//
// program to compute numeric average and letter grade (prototype for now)
// prompt for total homework points, maximum homework points,
//   total exam points, maximum exam points
// print numeric average and letter grade
//
println("enter your homework points")
val myHomework = readDouble
println("enter max homework points")
val maxHomework = readDouble
println("enter your exam points")
val myExam = readDouble
println("enter max exam points")
val maxExam = readDouble

val numericAverage = 100*(myHomework + myExam) / (maxHomework + maxExam)
println("numeric average = " + numericAverage +"%")

val letterGrade = 
  if (numericAverage >= 90) 'A'
  else if (numericAverage >= 80) 'B'
  else if (numericAverage >= 70) 'C'
  else if (numericAverage >= 60) 'D'
  else 'F'

println("letter grade is " + letterGrade)