What is the use of pointers in c++?

Question

in c++ pointers store the address or location of variable
but what exactly can we do with pointers
like to create a game or any software do we actually need pointers?.but most of the languages don't even have pointers!
so what can we do with the variables location?

Answer 1

When you pass an argument to a function, like myfunc(3);, then a copy is made.

For a little int that's no problem, but if you pass a larger object like an array, that can slow things down.

By passing a pointer to the beginning of the array, you only make a copy of the address instead of the whole thing.

Basically, instead of driving a truck filled with stuff to your function's front door, you just hand over a paper: "Get your stuff at this address!"