Data Structure Array: Find the two numbers with odd occurrences in an unsorted array

http://www.geeksforgeeks.org/find-the-two-numbers-with-odd-occurences-in-an-unsorted-array/

 #include <iostream>
 #include <vector>
 #include <algorithm>
 #include <queue>
 #include <stack>
 #include <string>
 #include <fstream>
 #include <map>
 using namespace std;

 void printtwoodd(int arr[], int n) {
     int x = arr[];
     for (int i = ; i < n; i++) x ^= arr[i];
     x &= ~(x-);
     int ans1, ans2;
     ans1 = ans2 = ;
     for (int i = ; i < n; i++) {
         if (arr[i] & x) ans1 ^= arr[i];
         else ans2 ^= arr[i];
     }
     cout << ans1 << " " << ans2 << endl;
 }

 int main() {
     int arr[] = {, , , , , , , };
     printtwoodd(arr, );
     return ;
 }