In C Standard the operator [] is defined as arithmetic expression and used in array notation as well.What is a meaning of a[b]?

Answer 1

*(a+b)
a + *(b)
*a + b
a + b
a[b] is the b-th index in array a. So, the memory address of this element is denoted by *(a+b).
Hence, a[b] = b[a] where b is an integer.

Answer 2

RuBeen Dahal👿
What does a + *(b) represent? an address, a value? I can't get that expression evaluated without getting an error.