Fibonacci in c++

#include<iostream>
using namespace std;

int fibonacci(int n);

int main() {
    int n;

    cout << "Enter the number of terms: ";
    cin >> n;

    cout << "Fibonacci Series up to " << n << " terms: ";

    for (int i = 0; i < n; i++)
        cout << fibonacci(i) << " ";

    return 0;
}

int fibonacci(int n) {
    if (n <= 1)
        return n;
    else
        return fibonacci(n - 1) + fibonacci(n - 2);
}