What Is The Output Of The Following Codep Pre Langc #1799

 #include<stdio.h> int recursive_search_num(int *arr, int num, int idx, int len) { if(idx == len) return -1; if(arr[idx] == num) return idx; return recursive_search_num(arr, num, idx+1, len); } int main() { int arr[8] ={1,2,3,3,3,5,6,7},num=5,len = 8; int indx = recursive_search_num(arr,num,0,len); printf("Index of %d is %d",num,indx); return 0; }