I want to dynamic memory allocation without the knowledge of pointers is it possible

Answer 1

If you want that, you'll probably need a higher language like Java, which does it for you in the background.

There's something called 'variable length arrays'. It's not the same, but since we don't know what exactly you want to do, depending on what it is, it might do the trick...

https://en.m.wikipedia.org/wiki/Variable-length_array