char array question

Question

char*a = "Coding";
char*b = (++a) + 3;
cout << *b

// output is n

How did we get to the letter n?
n is the 5th letter / element in the char array.
++a is equivalent to a=a+1.
So char*b = (++a) + 3 is equivalent to char*b = a+4. Does this 4 represent the element number?

Answer 1

"Coding"
|
a

++a

"Coding"
|
a

b = a + 3;

"Coding"
| |
a b

Indexes and pointers start from 0