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What you say is true, though I'd add that you can do the same thing in
RPG just by overlaying a 1A field with a 3U 0 field in a data structure.
The problem with your approach, Vern (you knew this was coming, right?)
is that EBCDIC letters aren't always contiguous. It's true that if you
had A (EBCDIC 193) and you added 1, you'd get B (EBCDIC 194). However,
if you had the letter I (EBCDIC 201) and you wanted to get J, you'd have
to add 8 since J is EBCDIC 208. IMHO, it's easier to use an array when
you increment instead of trying to use the numeric value of the letter.
I suppose you could convert you letter to Unicode (RPG's "C" data type)
and add 1 there. Unicode letters are all contiguous, so that'd work
better.. but it still seems like a lot of screwing around.
vhamberg@xxxxxxxxxxx wrote:
Do it in C - that does this kind of increment nicely, since it treats
characters as 1-byte integers, sort or - Scott will probably have to
correct me!! But you'd still want to separate the 2 sections, numeric
and alpha, and check ranges and overflows.
Actually I'm not kidding!! ;-)
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