What is the use of pointers?why we need to point memory location?

Answer 1

think of it as if you are writing index in front of your book,
you make a table with columns for the author, the module's name and some small data, but for the content you use a pointer called page number to link you to that content, because:
1- the content is not fit in the workspace which is the index table.
2- if you try to put the whole content in this table you will lose the shape of the table because some fields are small and the others are massive big.

Answer 2

Thank you all