Program to find the first repeating element in an array of integers in C++

int main(){
  int array[100], n, i;
  cout << "Enter number of elements: ";
  cin >> n;
  cout << "\nEnter elements: ";
  for (i = 0; i < n; i++)
    cin >> array[i];

  cout << "Original array: ";

  for (int i = 0; i < n; i++)
    cout << array[i] << " ";

  // selecting an element

  for (int i = 0; i < n; i++)
    //traversing to check repetition

    for (int j = i + 1; j < n; j++)
      if (array[i] == array[j]){
        cout << "\nFirst repeating integer is " << array[i];
        return 0;
      }