Question

What I know?

There is an array, int a[10], and to access first element of it, I can either use a[0] or 0[a];
which leads to

*(a+0) and *(0+a) -> Both results in accessing first element of the array. 

What I want to know?

I want to know whether are any cases where it is more practical to use 0[a] instead of a[0]?

Answer 1

No, it’s the other way around. a + b and b + a mean the same thing when one is a pointer and the other is an integer. That leads to *(a + b) and *(b + a) meaning the same thing, and that leads to a[b] and b[a] meaning the same thing.

There are some cases that are made more readable by adding a pointer to an integer (i + p). There are no cases that are more readable by indexing an integer (i[p]). Don’t do it.