Please explain the solutions below.

This is for c++

For part a, why is arr[1] = 3 ignored and then arr[1] = 5 included but at the end of the array. isn't the pointer arr[1] referring to index 1 in the array? I'm having the same confusion for part c.

Problem 5. &. nrq( 1 int a[] = {0 , 0, 0, 2 int* arr = a; 3 arr [0] = 1; 4 *(++arr) = 2; 5 arr [13; 6 *(++arr) = 4; Consider the following code which manipulates the values of an array 0); (a) Write the contents of the array a after executing the code above. (4 pts) Solution la={1, 2,4,0) (b) what would be the result of the expression arr [1] = 5 ; after executing the code above? (3 pts) Solution ia={1, 2,4,5) (c) what would be the result of the expression arr [2] = 6; after executing the code above? (3 pts) Solution. This expression results in an error undefined behavior. The pointer arr [2] points to an address beyond what is allocated for the array a (specifically, arr [2] points to a [4]). Trying to reassign the value of memory with address arr [2] will have unpredictable consequences