What Is The Output Of The Following Codep Pre Langc #1810

 #include<stdio.h> int recursive_binary_search(int *arr, int num, int lo, int hi) { if(lo > hi) return -1; int mid = (lo + hi)/2; if(arr[mid] == num) return mid; else if(arr[mid] < num) lo = mid + 1; else hi = mid - 1; return recursive_binary_search(arr, num, lo, hi); } int main() { int arr[5] = {5,4,3,2,1},num = 1,len = 5; int indx = recursive_binary_search(arr,num,0,len-1); printf("Index of %d is %d",num,indx); return 0; }