What is this in c ?

Question

Int a[];
Int *p;
*p=*a;
Can any explain what this is do

Answer 1

First int a[] is equal to int *a.
Second: a and p are pointers to ints.
Third: *p evaluate value instead of location in memory.

Summary:
We assign value of *a to *p.

Answer 2

With the code as is, you may get an error because you are trying to access the value pointed to by p without having initialised p yet.

Answer 3

Read about pointer values