Ёлочка

#include <iostream>

using namespace std;

int main()
{
   cout << "write the number" << endl;
   int numberfromuser;

   int countStar = 1;
   cin >> numberfromuser;
   cout << endl;
   while(0 < numberfromuser)
    {
        numberfromuser = numberfromuser - 1;
        for(int i = 0; i<=numberfromuser; i++)
            {
                cout << " ";
            }
        for(int i = 0; i<countStar; i++)
        {
            cout << "*";
        }
        countStar = countStar + 2;
        cout << endl;
    }
    countStar = countStar/2 - 0,5;
    for(numberfromuser; numberfromuser<countStar; numberfromuser++)
        {
            cout << " ";
        }
    cout << "*";

return 0;

    }