Question 2 (25 marks) The following code is an iterative implementation of binary search. 1 // C program to implement iterative Binary Search 2 #include 41/1 A iterative binary search function. It returns 5 // the index of xin given array arr(1..r] if found, 6 // and -1 if not 7 int binary Search (int arr [], int i, intr, int x) { while (1