Strange Compiler error at the beginning of header

[Adam Smith]

I am using a header file to declare a class for a queue, which is just a dynamic array and the functions to insert and remove as well as grow the array. The problem is that the compiler gives me this error:

queue.h:7: error: expected ‘,’ or ‘...’ before ‘class’
queue.h:9: error: expected `)' before ‘;’ token

The header is as follows:

#ifndef __QUEUE_H__
#define __QUEUE_H__

#include <iostream>
#include "p1.h"

class emptyQueue {
    // OVERVIEW: an exception class
};

class Queue {
    // OVERVIEW: contains a dynamic array of spaces.

 public:

    // Operational methods

    bool isEmpty();
    // EFFECTS: returns true if list is empy, false otherwise

    void insert(space *o);
    // MODIFIES this
    // EFFECTS inserts o at the front of the list

    space *remove();
    // MODIFIES this
    // EFFECTS removes and returns first object from non-empty list
    //         throws an instance of emptyList if empty

    // Maintenance methods
    Queue();                                   // ctor
    ~Queue();                                  // dtor

 private:
    // A private type
    int numElts;
    int maxElts;
    space** queue;

    // Utility methods

    //Increases the size of the queue.
    void makeLarger();
    
};


#endif /* __QUEUE_H__ */ 

I just can't imagine what I need to change before my exception class.

[kbw]

The error is in pi.h

[Adam Smith]

haha, there was an error in p1.h. Thanks! I've never run into errors spilling over into other files before :/

[firedraco]

Also, please inherit your exceptions from std::exception at least (hopefully from one of the more derived versions).

[Adam Smith]

yeah, I'll do that. This is a just a template that I was using from one of my previous classes, so it's far from perfect. Doesn't even have a copy ctor or assignment operator.