Signed versus unsigned types

Posted on 2002-03-21
Last Modified: 2010-05-02
What does signed/unsigned mean in relation to a data type?
Question by:philjh
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LVL 44

Accepted Solution

Arthur_Wood earned 20 total points
ID: 6885202

Numeric values, such as Integers, or Long Integers, in VB, have a SIGN. That is they can be EITHER positive (+) OR Negative (-).  This limits integers to values bewteen +32767 and -32768.  If this were an UNSIGNED value, then integers would range from 0 to 65536.

Essentially what is involved is that in the 16-bit integer value in memory, the "HIGH-ORDER" bit is treated as a SIGN bit, (0 means POSITIVE, 1 means Negative in that ONE bit).



Author Comment

ID: 6885272
Thanks Arthur,
Looks like I was trying to over-complicate the matter.

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