//
// program to count lines in input file(s) given as command-line arguments
// (as an example of using command-line arguments and files)

// apply countLines to all elements of args array and add
val lines = args.map(countLines(_)).sum
println()
println(lines + " total lines")

// count lines in file "filename"
def countLines(filename:String) : Int = {
  val src = scala.io.Source.fromFile(filename)
  val lines = src.getLines.toList
  src.close
  println(lines.length + " lines in " + filename)
  lines.length
}