Complete newfag here

Hai, I'm a newfag to C++ and to this board so excuse my giant amount of fail.
Why won't this figure out the smallest thing in the array?
http://codepad.org/vaHOX8mW

>>12
forgot to return r:

int smallest(int *in, int length) {
  int r = in[0], i;
  for (i = 1; i < length; i++)
    if (in[i] < r) r = in[i];
  return r;
}