check if entry in numeric array is empty

[ryancam]

I have a numeric array (i32) that gets data inserted into it as the program is running.  I am looking for a way to determine if a specific index in that numeric array has been populated yet.  In other words, I need to determine if an index in a numeric array is empty.  Index array is close to what I need, but if the indexed entry in the array is empty, it will return 0 (the default value for this numeric array), which is a potential valid data entry for my numeric array, and therefore is not sufficient to check if the indexed result was originally empty or 0.

Any help on this is appreciated.

[altenbach · Accepted solution]

Compare the index with the array size.