Функции елочки

#include <iostream>
using namespace std;

int Zapros(int &a){
    cout << "Vvedite rasmer elochki:";
    cin >> a;
}
void Budivelnik(int b,int f){
    int c = 0;
    int g = b;
    int e = 1;
    c = e;
    while(b > f)
    {
        while(g > 0)
        {
        cout << " ";
        g--;
        }
        c = e;
        while(c > 0)
        {
            cout << "*";
            c--;
        }
        e = e + 2;
        f++;
        g = b - f;
        cout << endl;
    }
    f = 0;
    while(b > f)
    {
        cout << " ";
        f++;
    }
    cout << "*";
}
int main()
{
    int index = 0,kolichestvo = 0;
    Zapros(kolichestvo);
    Budivelnik(kolichestvo,index);
    return 0;
}