C++: Array vs Pointer

What is the difference between an array and a pointer in C++?

In C++, an array is a collection of elements of the same type, while a pointer is a variable that stores the address of another variable.

Can you explain how memory allocation works for arrays and pointers?

Arrays have a fixed size determined at compile time, while pointers can be dynamically allocated using 'new' and can point to any memory location.

Are there any performance differences between using arrays and pointers?

Yes, accessing elements in an array is generally faster due to contiguous memory allocation, while pointers can introduce overhead due to dynamic memory management.

When should I use an array instead of a pointer?

Use arrays when the size is known and fixed, and use pointers when you need dynamic memory allocation or to work with data structures like linked lists.