Problem with pointers

You are yet to allocate Pindex.

Use new :)

i want the result 0, 1, 2, 0, 2, 3

You haven't allocated any memory for pIndex to point to, as a consequence the results of running your code are undefined - most probably just resulting in a crash due to an access violation.

i've allocated the memory to pIndex
pIndices = new USHORT [6];
but it still shows the same result

First, make sure that you allocated "pIndex", not "pIndices". Not sure if that's a typo or a real error in your code. Second, note that when you do *(pIndex++) for the first time, you're skipping the first element of the array. You increment the pointer to point to the second element, and that element receives the first 0. This is the sequence of events from the way I see it:

Before first iteration:
pIndex : ? ? ? ? ? ?

After first iteration:
pIndex : ? 0 1 2 ? ?

After second iteration:
pIndex : ? 0 1 2 0 2 (gah! seg fault?)

Why aren't you using the [] operator to access the elements of the array?



And if you really want to use pointers...



Note that my choice to use the pre-fix increment operator instead of postfix is merely a personal choice. It makes no real difference; you could have used *(pIndex++) just as well, like in your original code.