Array Subscripting and Pointers

Manipulating pointers and subscripting arrays both require that you pay attention to the size of the data.

Incrementing a pointer means having it point to the next adjacent data item. If the item is a single byte, then you simply add one to the pointer. But if the item is larger, you must add an amount to the pointer equal to the number of bytes in the item.

Subscripting an array is similar. Incrementing the subscript means you are selecting the next adjacent data item. If the items in the array are bytes, then you simply add the subscript to the starting address of the array. But if the items in the array are larger, you must multiply the subscript by the number of bytes per item and then add it to the starting address of the array.

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