program t81_upcase;

{ t81 -- UpCase on a CHAR.

  CALC.INC's Clear ends `until Upcase(Ch) in ['Y','N']'.  TP3's UpCase is a
  CHAR function here (later versions also accept a string, which stays ENoLib
  until a string implementation exists): 'a'..'z' fold to 'A'..'Z', everything
  else is unchanged.  A constant folds at compile time; a variable is compared
  and decremented at run time. }

var
   c : char;
begin
   c := 'a';
   writeln (Upcase (c));
   c := 'z';
   writeln (Upcase (c));
   c := 'A';
   writeln (Upcase (c));
   c := '5';
   writeln (Upcase (c));
   writeln (Upcase ('q'));
   if Upcase (c) = '5' then writeln ('same') else writeln ('diff')
end.