What does this error mean?!?!

[satchmo05]

I am getting this error message when I run my program, what does it mean?!

terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
92Aborted

Thanks for the help!!

[helios]

Sounds like you ran out of memory.

[satchmo05]

well that's odd because it doesn't really seem like I am accessing too much with a file that I'm accessing from that has 20 integers. Here is the function where it's coming from...why would I be running out of memory? Thanks!

vector <int> numbers::sort_down(vector <int> unsorted_list)
{
      int count = 0;
      if (unsorted_list.size() == 1)
         cout << unsorted_list[0];
      else
      {
          int max = unsorted_list[0];
          for (int i = 0; i < unsorted_list.size(); i++)
          {
              if (max < unsorted_list[i])
              {
                 max = unsorted_list[i];
                 count = i;
              }
          }
          cout << max << " -- ";
          numbers::remove(count);
          numbers::sort_down(); 
      }
}

It outputs all of the numbers, except the last one, because then it shows that error message...thanks again for the help!