What is the use of pointers?

Question

A pointer in C++ just give us a boring hexadecimal number. I think this is useless. Does it have a use?

Answer 1

Hello, HighFlyer !
A pointer is the same variable, only it is initialized not by the value of one of the many types of data in C++, but by the address, the address of some variable that was declared in the code earlier. We will analyze on an example:

int main () {
int val = 5;
}
By the way, you can always pay attention to this lesson from SoloLearn
https://www.sololearn.com/learn/CPlusPlus/1630/?ref=app

Answer 2

Pointer have an GREAT use in C/C++ that you can understand only when know dynamic memory allocations, function/method argument passing, polymorphism and some others

Answer 3

Tarika I learned that lesson I now understand

Answer 4

I learned polymorphism just now and they're not useless for me anymore tysm

Answer 5

access a variable from another using pointer...

Answer 6

So what is a good use for it?

Answer 7

that boring hexadecimal number is a address of variable, if you want to understand this learn 'pass by value' and 'pass by reference' concept.

Answer 8

pointer is use to store the memory location of any variable
means you can access the value of variable x by storing memory location of x variable to any pointer.

Answer 9

can we access a variable from another project using pointer?