C++ ::  Algorithm To Read Duplicate Array Elements - Return First Duplicate Value Only

I have an algorithm which uses nested for loops, which looks for duplicate elements in an array. However, as soon as one duplicate element is found... the program will stop looking for more duplicates? My program continues to look for more even though one is found? I know there is a break command but I can't get it to work. Code is below:

output of program: Repeating element found first was: 2, 1

Although I want the outcome to be; Repeating element found first was: 2

#include<stdio.h>
#include<stdlib.h>
#include <iostream>
using namespace std;
void printRepeating(int arr[], int size) {
int i, j;

[Code] .....