explain how to access 2D array element by dereferencing operator?(see code)

Question

C challenge question.accessing 2D array.
https://code.sololearn.com/cN8Wb9HNfrsy/?ref=app

Answer 1

The array initialization was missing brackets which could help improve clarity on how the elements of the array is arranged.

int arr[ 2 ][ 3 ]={ { 2, 3, 4 }, { 5, 6, 7 } };

*( arr + 1 )
Equals to arr[1]
Refers the second row -> { 5, 6, 7 }

*( *( arr + 1 ) )
Equals to *( *( arr + 1 ) + 0 )
Equals to arr[1][0]
Refers to the first column of second row -> 5