class Box
  public word size
end class

program Main
  var x as byte
  var w as word
  var i as integer
  var c as char
  var ok as boolean
  var b as Box
  var arr as byte[3]
  w = w + ok
  ok = ok + ok
  ok = w and ok
  ok = not w
  w = -w
  i = w + i
  ok = c < x
  ok = ok < ok
  w = "a" + 1
  w = b + 1
  ok = b = 5
  w = arr + 1
  x = x + 300
  ok = 5 = c
  w = (w + ok) * 2
  ok = - ok
end program