Basic C++ problems

-snip-

Rearranged it + fixed typos.

Code:

int n;
int dupecount = 0;
int count = 0; //prevNum is not defined in the 1st number, so I put this in.
int prevNum;
while (cin >> n) {

      if (cin >> n && count != 0) {
         if (prevNum == n) {
            ++dupecount;
         }
      }

    int prevNum = n;
    ++count;
}

cout << dupecount;

The inputs I got wrong and the inputs that I got right switched.