Thread: Problem: expected `,' or `...' before '&' token

i have to classes, the Order class is in Order.h and the ISBN class is in ISBN.h

Order.h:

Code:

#include <cstdio>
#include <cstring>
#include <iostream>
using namespace std;
class ISBN;
class Order{
  char s;
  int ordered;
  int delivered;
  char ISBN[11];
 public:
  Order();
  Order(const ISBN& isbn); <- here is says expected `,' or `...' before '&' token  ISO C++ forbids declaration of `ISBN' with no type
  void style(char c);
  int has(const ISBN& isbn) const; <- here is says expected `,' or `...' before '&' token  ISO C++ forbids declaration of `ISBN' with no type
  int onOrder() const; 
  int augment(istream& is); 
  int augment(int add); 
  int recieve(istream& is); 
  void display(ostream& os) const; 
};

ISBN.h

Code:

#include <cstdio>
#include <cstring>
#include <iostream>
using namespace std;
class ISBNPrefix;
class ISBN{
  char ISBN1[11];
  char area[6];
  char publisher[8];
  char title[8];
  char s;
  int isRegistered;
  int decode(const ISBNPrefix& list);
 public:
  ISBN(); 
  ISBN(const char* str, const ISBNPrefix& list);
  ~ISBN();
  void style(char c);
  int empty() const;
  int registered() const;
  void toStr(char* isbn) const;
  void toStrWithStyle(char* isbn) const;
  int accept(istream& is, const ISBNPrefix& list); /* not */
  friend int operator==(const ISBN& left, const ISBN& right); /* not */  
};

any ideas what caused this?

Originally Posted by laserlight

I believe the problem is here:

Code:

char ISBN[11];

You gave a member variable the same name as a class.

By the way, do not place using directives at global scope in a header file. They will cause namespace pollution.

alright, thanks i fixed both problems