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{ comparsion of empty string }
{$H+}
var
my_str: string;
my_str_wide: widestring;
my_str_ansi: ansistring;
my_str_uni: unicodestring;
i: integer;
begin
my_str := '';
my_str_wide := '';
my_str_ansi := '';
my_str_uni := '';
i := -1;
case my_str of
'b'..'b': i := 1;
'c': i := 2;
'd'..'eee': i := 3;
''..'a': i := 4;
else i := 0;
end;
if (i <> 4) then begin
writeln('Error');
Halt(1);
end;
case my_str_wide of
'b'..'b': i := 1;
'c': i := 2;
'd'..'eee': i := 3;
''..'a': i := 4;
else i := 0;
end;
if (i <> 4) then begin
writeln('Error');
Halt(1);
end;
case my_str_ansi of
'b'..'b': i := 1;
'c': i := 2;
'd'..'eee': i := 3;
''..'a': i := 4;
else i := 0;
end;
if (i <> 4) then begin
writeln('Error');
Halt(1);
end;
case my_str_uni of
'b'..'b': i := 1;
'c': i := 2;
'd'..'eee': i := 3;
''..'a': i := 4;
else i := 0;
end;
if (i <> 4) then begin
writeln('Error');
Halt(1);
end;
end.
|
