{正確符號(hào)測試程序   TEST1.PL0}

{ Correct Symbols }
    { Comment }
{abcdefghijklmnopqrstuvwxyz
 ABCDEFGHIJKLMNOPQRSTUVWXYZ
 1234567890 !"#$%&'()*+,-./:;<=>?@[\]_~`}
    { Special Symbols }
+  -  *  /  <  =  >  <=  <>  >=  :=
(  )  [  ]  ,  .  :   ;   ..  '
    { Numerals or char }
0  32767  0.0  32767.123E-12  123E+12  0E0  'a'  '%'
    { Word Symbols }
And  array  begin  call  case  const  div  do  down  else  end  
for  function  if  mod  not  of  or  procedure  program  
read  record  repeat  then  to  type  until  var  while  write
    { Names }
Integer  boolean  char  real  false  true
abcdefghijklmnopqrstuvwxyz0123456789
ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
DNA  a12  ac  DNA  a12  ac  Dna  Ac  aC  A12
     { ERROR }
!  "  #  $  %  &  '  ?  @  \  _  ~
2a  0A