Two confusing errors

[Jeremiah234]

Getting these errors in my .h file that I can't explain:


PrefixNode.h:15: error: field ‘next’ has incomplete type
PrefixNode.h:17: error: two or more data types in declaration of ‘root’


Here is my .h file:


#ifndef _PREFIXNODE_H_
#define _PREFIXNODE_H_
#include <iostream>
#include <list>
using namespace std;

class PrefixNode
{

private:
class stringPointer
{
private:
list <string> words;
PrefixNode next;
}
int* root;
stringPointer node;




public:
PrefixNode();
~PrefixNode();
int size();
};
#endif

[ciphermagi]

You'll need to ensure that you're passing the PrefixNode type by reference so that it doesn't have to be completely constructed before it's referred to.

[vlad from moscow]

The compiler reports that you cannot define members of type PrefixNode until the definitiom of PrefixNode will be complete. The invalid statement is

PrefixNode next;

I think you was going to write

PrefixNode *next;