Validation ________ helps the data entry person know why the entry is being rejected

Most Web browsers display table data using unformatted text that is ____________________-aligned.

Fill in the blank(s) with the appropriate word(s).

Show how to return the store allocated by this statement to the heap manager for reallocation.

Given the type definitions: ``` const int STRING_SIZE = 20; struct ListNode { char item[STRING_SIZE]; int count; ListNode * link; }; ListNode *head = new ListNode[10]; ```