//
// simplified grades program to compute numeric grade and letter grade
//
// prompt for exam1, exam2, and homework
// print numeric average and letter grade
//
val Exam1Max = 100
val Exam2Max = 200
val HomeworkMax = 200

def prompt(name : String, maxScore : Int) : Int = {
  println("enter " + name + " score (maximum " + maxScore + ")")
  readInt
}

val exam1 = prompt("exam1", Exam1Max)
val exam2 = prompt("exam2", Exam2Max)
val homework = prompt("homework", HomeworkMax)

val numericGrade = 100 * (exam1 + exam2 + homework) / 
        (Exam1Max + Exam2Max + HomeworkMax)

println("numeric grade " + numericGrade)

if (numericGrade >= 90)
  println("A")
else if (numericGrade >= 80)
  println("B")
else 
  println("less than B")