C/C++ Program to genereate Fibonnaci series

//Program to generate Fibonacci series
#include<iostream>
using namespace std;
int main()
    {
    int n,i,f1=0,f2=1,f3;
    cout<<"\n Enter how many numbers you want to generate in Fibonacci series:";
    cin>>n;
    cout<<"\n The Fibonacci series is"<<endl;
    cout<<"\n\t";//Spacing for output
    if(n==1)
        cout<<f1;
    else if(n==2)
        cout<<f1<<" "<<f2;
    else
        if(n>2)
          {
        cout<<f1<<" "<<f2;
        for(i=3;i<=n;i++)
         {
           f3=f2+f1;
           f1=f2;
           f2=f3;
           cout<<" "<<f3;
         }
          }
    cout<<endl;
return 0;
}