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Validations on an alphanumeric field

 
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lvbntapasvi

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Joined: 20 Jul 2006
Posts: 30

PostPosted: Sat Jan 02, 2010 11:06 am    Post subject: Validations on an alphanumeric field
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I have a field which is defined as alphanumeric and the user has to enter values in this field in format of NNNC, where N = numeric and C = character. Also, the last bit (character), can take values only 'D', 'M','W' and 'Y'. So, how can I make a check on this field so that valid values are entered. So, basically I need to validate tha the first 3 are numeric and the 4th field is either D /M/W/Y.

Thanks in advance.

Tapasvi.
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dbzTHEdinosauer

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Joined: 20 Oct 2006
Posts: 6968
Location: porcelain throne

PostPosted: Sat Jan 02, 2010 1:22 pm    Post subject:
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Code:
05  input-field
     10  first-numeric-char       pic 9.
          88 numeric-char-is-numeric values 0 thru 9.
     10  second-numeric-char      pic 9.
          88 numeric-char-is-numeric values 0 thru 9.
     10  third-numeric-char       pic 9.
          88 numeric-char-is-numeric values 0 thru 9.
     10 Forth-char               pic x.
          88  forth-char-is-valid    values 'D', 'M','W', 'Y'.

If numeric-char-is-numeric in first-numeric-char
and
   numeric-char-is-numeric in second-numeric-char
and
   numeric-char-is-numeric in third-numeric-char
and
   forth-char-is-valid
Then
   perform everything-is-ok
else
   perform find-invalid-char
end-if


by the way, this is not a rookie or beginners forum.
happy new year, rookie!
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