Fabonacii Series in C++

123456789101112131415161718192021222324252627#include<iostream>
using namespace std ;
int fib(int n)

{

if (n <= 1)

return n;

return fib(n-1) + fib(n-2);

}
int main ()

{

int n = 9;

printf("%d", fib(n));

getchar();

return 0;

}