Sirul lui Fibonacci

#include <iostream>

using namespace std;

int main()
{
    unsigned long long f1=1, f2=1, term, n, i;
    cout<<"n="; cin>>n;
    cout<<f1<<" "<<f2<<" ";
    for(i=3; i<=n; i++)
    {
        term=f1+f2;
        cout<<term<<" ";
        f1=f2;
        f2=term;
    }
    return 0;
}