Why use pointers?

Question

I know this is a really basic question, but I've just started with some basic C++ programming after coding a few projects with high-level languages. Basically I have three questions: 1. Why use pointers over normal variables? 2. When and where should I use pointers? 3. How do you use pointers with arrays?

Answer 1

1)

Objects and data structures of practically unlimited size can be passed via pointer which only uses 4-8 bytes on the call stack

2) Never be afraid to use pointers almost any time you want. As stated, pointers are the most

convenient way to access data structure

3) ptrArray = &A[0];

ptrArray++ accesses the next item in the array