As others already noted, you shuold either use the
using
(pardon the pun) declaration, e.g.
#include <iostream>
#include <string>
#include <ctime>
using namespace std;
or precede with the
std::
specifier the object belonging to the 'standard' namespace, e.g.
int main()
{
std::string s;
Moreover if your program uses the
BunnyList class
(or
struct
) then you need to include the header file declaring such a
class
(or
struct
).