#include "stdlib.h"
#include "iostream.h"

int fibo(int n) {
    switch(n) {
    case '0': return 0; break;
    case '1': return 1; break;
    default: return fibo(n - 1) + fibo(n - 2);
    }
}

int main() {
cout << fibo(3) << endl;
system("pause");
}