Why pointer is require?

Question

Hi programmers.
As an example we have pointer named "*p" and variable named "a".
We can access the value of variable by using it's name.so why we write "*p" instead of "a"?likewise we can access the address of "a" by using "&a".so what is necessary to use p=&a instead?

Answer 1

a pointer is a variable that hold the address of another variable or another pointer itself, using pointer will give you direct access to memory and not just printing the address of a or accessing the value of a, and your code will be pretty fast

Answer 2

Thanks a lot
I apologize for taking your time