C++ Program to generate nth term in Fibonacci series

//Program to generate nth term in Fibonacci series
#include<iostream>
using namespace std;
int main()
      {
    int f1=1,f2=1,f3=0,n,i;
    cout<<"enter the term you want to find : ";
    cin>>n;
    if(n==1)
      cout<<f1;
    else if(n==2)
      cout<<f2;
    else if(n>=3)
         {
        for(i=3;i<=n;i++)
            {
            f3=f1+f2;
            f1=f2;
            f2=f3;
            }
        cout<<f3<<"\n";
         }
return 0;
      }
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 C++ Program to generate Fibonacci series