Is it necessary to use pointers ? And why

Question

Example array a
printf ("%d",a [i]);
p=a;
printf ("%d",*(ptr+i));
Why use pointer if we can directly use array variable?

Answer 1

Sorry I didn't get you

Answer 2

The compiler automatically turns your first case into the other case, so yes, and you can use pointers in other ways too

Answer 3

You have to compile your code first; and the compiler will turn the first case into the other case

Answer 4

You have to compile your code first; and the compiler will turn the first case into the other case