A function that modifies an array by using pointer arithmetic such as ++ptr to process every value of the array should have a parameter that is:
A) A nonconstant pointer to nonconstant data.
B) A nonconstant pointer to constant data.
C) A constant pointer to nonconstant data.
D) A constant pointer to constant data.

Question

Quizplus · Accepted Answer

If we want to modify the values of an array using pointer arithmetic such as ++ptr, we need to use a nonconstant pointer to access the memory addresses of the array elements. Additionally, we cannot use a constant pointer because we need to modify the data and not just read it. Using a pointer to constant data would prevent us from modifying the values in the array. Therefore, the best choice is a nonconstant pointer to nonconstant data.

A Function That Modifies an Array by Using Pointer Arithmetic