Multiple choice technology programming languages

How many bytes does a S9(7) COMP-3 field occupy ?

  1. 4

  2. 3

  3. 2

  4. None of the above
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A Correct answer
Explanation

A COMP-3 (packed decimal) field stores two digits per byte, plus one sign nibble in the last byte. The formula for the byte size is (N + 1) / 2 rounded up. For S9(7), the number of digits N is 7. Thus, (7 + 1) / 2 = 4 bytes. Other options are incorrect mathematical derivations.

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