Help using the Case function

[James Russell]

Hey all,

Just had a query related to the Case function. It has worked well for me when I've needed to do something number related, eg:

Begin

Case NUM of

1: FIELD:='A';

2: FIELD:='B';

3: FIELD:='C';

End;

Where NUM is an integer and FIELD a string, I'm wondering if there is an equivalent where I can use a string as the case value.

Begin

Case FIELDA of

'AA': FIELDB:='A';

'BB': FIELDB:='B';

'SOMETHING: FIELDB:='OUTPUT';

End;

Where FIELDA and FIELDB are both strings. Does that make sense? There might be a function that I'm not finding in my help guide.

Cheers,

J

[MullinRJ]

You can use single characters, but not strings, in a case statement.

CH :Char;

case CH of

???'a' : begin end;

???'b' : begin end;

???'c' :begin end;

???'d' :begin end;

???'e' :begin end;

???'f' :begin end;

???'g' :begin end;

???'h', 'i', 'j', 'k' :begin end;

???'l' .. 'p' :begin end;

???'q', 'r', 's' :begin end;

???'t', 'u', 'v' :begin end;

???'w' :begin end;

???'x', 'y', 'z' :begin end;

end;???{ case }

As a rule, case statements only work with enumerated types, that is, variables that have an integer value.

HTH,

Raymond

[James Russell]

That'll do it, thankyou Raymond.

J