What is pointer arithmetic in C++?

Can you explain what pointer arithmetic is in C++?

Pointer arithmetic allows you to perform operations on pointers, such as addition and subtraction, to navigate through arrays.

How does adding an integer to a pointer work?

When you add an integer to a pointer, it moves the pointer forward by that many elements, not bytes, based on the type size.

Can you give me an example of pointer arithmetic with an array?

Sure! If you have an array int arr[5], and int* ptr = arr;, then ptr + 1 points to arr[1].

What happens if I subtract two pointers?

Subtracting two pointers gives you the number of elements between them, which is useful for determining the distance in an array.