C++ program to print Fibonacci series using while statement

#include<iostream>
using namespace std;
int main()
{
  int f1,f2,f3,n,i;
  f1=0;
  f2=1;
  cout>>n;
  cout<<"n"<<f1<<","<<f2;
  i=3;
  while(i<=n)
  {
    f3=f1+f2; //1,2,3,5
    cout<<","<<f3;
    f1=f2; //1,1,2,3
    f2=f3; //1,2,3,5
  i++;
}
return 0;
}