3 questions in one challenge code??

Question

char *arr[] = {"C", "C++", "Java", "VBA"};
char *(*ptr)[4] = &arr;
cout << ++(*ptr)[2]<<endl

https://code.sololearn.com/cQ28Uhvpyhgv/?ref=app

Answer 1

First line
varName[] without digit in bracket is any size of array
assignment {c, c++,...} so the array is of size 4
The elements of the array are string. Which is an array of char.
char *varName = "abcde"
We can assign string to pointer of char
(pointer is default to be pointing to the first element of the iteratable)

Second line
varName[4] the digit 4 inside square bracket means of size 4
char *pointerName = &address is for renaming the pointer
Because the elements in array is also array, so *(*ptr)

Third line
[2] is the third element, which is Java
*ptr is pointing to J
++ shifts the pointer to the right by 1
So that result is ava