c++ Exception class definition

I am following an algorithm book and there are several lines about error exception. However, it cannot be compiled. It returns a message "unknown type name 'StackEmpty'" and another message "member initializer 'RuntimeException' does not name a non-static data member or base class".

Can anyone tell me what's wrong?

// declaration
template <typename E>
class ArrayStack {
  enum { DEF_CAPACITY = 100 };

public:
  ArrayStack(int cap = DEF_CAPACITY);
  int size() const;
  bool empty() const;
  const E& top() const throw(StackEmpty);
  void push(const E& e) throw(StackFull);
  void pop() throw(StackEmpty);

private:
  E* S;
  int capacity;
  int t;
};

class StackEmpty: public RuntimeException {
public:
  StackEmpty(const string& err): RuntimeException(err) {}
};

class StackFull: public RuntimeException {
public:
  StackFull(const string& err): RuntimeException(err) {}
};

// implementation
template <typename E>
ArrayStack<E>::ArrayStack(int cap) : S(new E[cap]), capacity(cap), t(-1) { }

template <typename E>
int ArrayStack<E>::size() const { return (t+1); }

template <typename E>
bool ArrayStack<E>::empty() const { return (t<0); }

template <typename E>
const E& ArrayStack<E>::top() const throw(StackEmpty) {
  if (empty()) throw StackEmpty("Top of empty stack");
  return S[t];
}

template <typename E>
void ArrayStack<E>::push(const E& e) throw(StackFull) {
  if (size() == capacity) throw StackFull("Push to full stack");
  S[++t] = e;

template <typename E>
void ArrayStack<E>::pop() throw(StackEmpty) {
  if (empty()) throw StackEmpty("Pop from empty stack");
  --t;
}