What is pointer arithmetic in C++?

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

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

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 of the type it points to. For example, if you have an int pointer and add 1, it moves to the next int in memory.

What happens if I subtract two pointers?

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

Are there any risks associated with pointer arithmetic?

Yes, pointer arithmetic can lead to undefined behavior if you go out of bounds of the allocated memory, so it's important to be careful.