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midrange.com
Is this right, or is there a flaw somewhere?
Char10 = %Subst(%Char(Date8):5:2) + '/' +
%Subst(%Char(Date8):7:2) + '/' +
%Subst(%Char(Date8):1:4)
The problem is that %CHAR() doesn't simply convert a number to a character field. It also formats it so that it's nicely read by human beings. So if you have a 7,2 field containing '0012345' then %char() will format it as '123.45' It removes the leading zeroes, and adds the decimal place to make it look nice to the user.
Unfortunately, the fact that it's formatted nicely is messing you up. When Date8 = 00000000, %char() will format it to simply be '0'. Note that '0' is only one character long. You can't take a substring starting in position 5, because there's only 1 position to begin with!
If you decide to continue doing it this way, consider using %EDITC(Date8:'X') instead of %CHAR(Date8). the X edit code does exactly what you want -- it retains the length of the field, and leaves the leading zeroes intact.
However -- why not use date operations? You can do this quite easily:
test(de) Date8;
if %error;
Char10 = *blanks;
else;
Char10 = %char( %date(Date8:*ISO) : *USA/ );
endif;
Or if you prefer:
monitor;
Char10 = %char( %date(Date8:*ISO) : *USA/ );
on-error;
Char10 = *blanks;
endmon;
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