//
// simplified grade calculations program
// prompt for some grades
// print percentage and letter grade
//
val Exam1Max = 100
val Exam2Max = 200
val HomeworkMax = 400

def prompt(assignment : String, maxPoints : Int) : Int = {
  println("enter " + assignment + " grade (max " + maxPoints + ")")
  readInt
}

val exam1 = prompt("exam1", Exam1Max)

val exam2 = prompt("exam2", Exam2Max)

val homework = prompt("homework", HomeworkMax)

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

println("numericGrade is " + numericGrade)

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