What is a Forepointer?

A forepointer is a pointer that points to the next element in a sequence, such as an array or a linked list. It is used to keep track of the current position in the sequence and to advance to the next element when traversing the sequence.

For example, if you have an array of integers, you might use a forepointer to keep track of the current index into the array while iterating over its elements. The forepoinder would point to the next element in the array that needs to be processed.

In a linked list, a forepointer might point to the next node in the list that needs to be traversed.

Forepointers are useful when you need to traverse a sequence in a specific order, such as reading or writing data from a file, or processing elements in a pipeline. They can also be used to implement iterators in programming languages.