6.2 Solutions

    1. e, c
    2. b (c is not available, since there is a local variable with the same name)
    3. b, c, d (all the global variables, and the procedure names)
    4. int (the local one. The global c which is real is not available in the procedure)

  2.  
    5 3
4 2
4 3

  3.  
    var pageNumber : int := 0

procedure newPage
   cls
   pageNumber := pageNumber + 1
   put "Page ", pageNumber
end newPage