AQA A2 Computing 2.3 Lists and Pointers Flashcards
1
Q
List
A
A collection of elements with an inherent order.
2
Q
Abstract Data Type (ADT)
A
A data type whose properties are specified independantly of any particular programming language.
3
Q
Pointer
A
A variable that contains an address. The pointer points to the memory location with that address.
4
Q
Null pointer
A
A pointer that does not point to anything.
5
Q
Pointer type
A
A vairable of a pointer that stores an address of a data value.
6
Q
Heap
A
The memory locations available to application programs for dynamic allocation.
7
Q
Dynamic Allocation
A
When memory space is only allocated when requested at run time.
8
Q
Memory leakage
A
When successive calls to allocate memory calls are made, but memory locations that are no longer required are not released. Eventually no memory is left in the heap.
