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unsigned short

Posted on 1998-09-15
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Last Modified: 2010-04-02
I want to go back and forth from an unsigned short (temp) as a pointer to just an unsigned short (num), but ....
temp = (unsigned short*)num;
doesn't work or vice versa.
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Question by:jtm082698
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nietod earned 40 total points
ID: 1172779
I'm having trouble following you, but I assume that temp is declared as "unsigned short *" and num is some sort of integral type, like short.  Right?  then

unsigned short *temp = *(unsigned short **) #

that is, get a pointer to num &num), convert the pointer to be a pointer to a unsigned short pointer (pointer to "unsigned short *" is "unsigned short **"), then derference the pointer.
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Expert Comment

by:eric_m
ID: 1172780
Any of these should work:

temp = #

*temp = num;

num = *temp;
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Expert Comment

by:nietod
ID: 1172781
The only work if temp is a pointer to the same type that num is.  I'm guessing that is not the case.
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LVL 22

Expert Comment

by:nietod
ID: 1172782
Hmmm.  As I re-read I'm beginning to wonder if Eric is right.  If num is an unsigned short and temp is just a pointer to an unsigned short, then you should just do

temp = &num.

The "&" means "generate a pointer to" the item on the right.  If this is what you need, you should reject my answer and award the points to Eric.
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Author Comment

by:jtm082698
ID: 1172783
Thanks for putting me on the right track, it was the ole "can't see the forest for the trees" type thing.
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