HW-1 for Chen

#include <iostream>
using namespace std;

int main()
{
 int floor = 1;
 int N;
 int count = 0;
 cout << "輸入層數N：";
 cin >> N;
 for (int i = 1; i <= N; i++)
 {
  if (i == 1)
   count++;
  else
  {
   count += i + floor;
   floor += i;
  }
 }
 cout << "當蘋果堆疊" << N << "層時，金字塔總共放了" << count << "個蘋果" << endl;
 system("pause");
 return 0;
}