Nth term of Fibonacci series.cpp

#include<iostream>
using namespace std;

int fib(int n)
{
    if(n==1)
    return 0;
    
    if(n==2)
    return 1;
    
    return fib(n-1) + fib(n-2);
}

int main()
{
    int n;
    cout<<"Enter a number"<<endl;
    cin>>n;
    
    cout<<fib(n);
    return 0;
}