Multiple choice technology mainframe

Internal storage used to store S9(n) COMP-3 variable is ____ bytes.

  1. n+1

  2. (n+1)/2

  3. (n+1)/3

  4. n/2 + 1
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D Correct answer
Explanation

COMP-3 (packed decimal) stores 2 digits per byte, with the last byte holding 1 digit plus sign. Storage bytes = (digits/2) + 1, where n is the number of digits in S9(n). For example, S9(5) needs 5/2 + 1 = 3 bytes.

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