Hello Andrew,
AM> I am working with a structure at the moment that seems to like even
AM> numbers!
That's right, it should be!

AM> I have created a structure in a program
AM> that I am writing composed of integers, unsigned shorts, unsigned chars,
AM> chars, and char arrays.  The problem is that I work out the structure
AM> size to be 187
AM> bytes, but sizeof(structure) is returning 188 bytes.

AM> Fine I say to myself - I knocked out one of the characters in the final
AM> character array (therefore dropping one byte) and sizeof reports 186.  I
AM> KNOW that a character is one byte (otherwise my other calcs would be way
AM> off the mark) so can someone give me an idea why sizeof insists on
AM> returning an even number?

    A pad byte has been inserted into your structure so that all of its
components are properly aligned. Word addresses must be even, or the CPU
will spew if you do a 16 bit operation on it. See the K&R C manual, Section
6.4, p.138 in the ANSI 2nd edition, for more info.

 Hope this helps,
 Michael.

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