#include <iostream.h>

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

int main(){
cout << "21st Fibonacci Number: " << Fib(21) << endl;
cout << "20th Fibonacci Number: " << Fib(20) << endl;
cout << "Golden Ratio: " << double(Fib(21))
							/double(Fib(20))<< endl;
return(0);
}