graph using adjacency list - problem

[orzeech]

Here's my code that's supposed to be a basic graph implementation using adjacency lists. It comes straight from R.Sedgewick's "Algorithms in C++".
However "23 - ISO C++ forbids declaration of `vector' with no type ". Why is that?

 
class graf
{
 
    struct edge
{
       int v, w;
       edge(int v = -1, int w = -1) : v(v), w(w) {}
};
 
struct node
              {
                     int v; node* next;
                     node(int x, node* t) {v = x; next = t; }
              };
 
      typedef node* link;
      vector <link> adj;
 
 
 
public:
             graf(int V) : adj(V) {adj.assign(V,0);}
             int insert(edge e)
             {
                 int v = e.v, w=e.w;
                 adj[v] = new node(w, adj[v]);
                 adj[w] = new node(v, adj[w]);
                 } 
             void remove(edge e);
             bool edge(int v,int w) const;
             class adjIterator;
             friend class adjIterator;
};

[boxfish]

Do you have

#include <vector>
using namespace std;

and the top of your header file?

[orzeech]

Do you have

#include <vector>
using namespace std;

and the top of your header file?

I forgot about it... Thank you again!