Converting integer to a bit representation

Question

How can I convert a integer to its bit representation. I want to take an integer and return a vector that has contains 1\'s and 0\'s of the integer\'s bit representation.

Answer 1

Doesn't work with negatives.

vector convert(int x) {
  vector ret;
  while(x) {
    if (x&1)
      ret.push_back(1);
    else
      ret.push_back(0);
    x>>=1;  
  }
  reverse(ret.begin(),ret.end());
  return ret;
}