Error with class causing a few hundred errors - c++

Question

My header for my class is
#ifndef _CENGINE_H
#define _CENGINE_H
#include "SFML\Graphics.hpp"
#include "CTextureManager.h"
#include "CTile.h"
class CEngine
{
private:
//Create instance of CTextureManager
CTextureManager textureManager;
//Load textures
void LoadTextures();
//New tile
CTile* testTile;
bool Running; //Is running?
sf::RenderWindow* window; //Create render window
public:
CEngine(); //Constructor
int Execute(); //Execute
bool OnInit(); //On intialization
void GameLoop(); //Main game loop
void Render(); //Render function
void Update(); //Update
};
#endif
Now the 3 errors it's giving me with this are:
cengine.h(8): error C2236: unexpected 'class' 'CEngine'. Did you forget a ';'?
cengine.h(8): error C2143: syntax error : missing ';' before '{'
cengine.h(8): error C2447: '{' : missing function header (old-style formal list?)
I know the errors are obvious but I can't see a problem with the class. I'm probably being really stupid because I'm tired.

Answer 1

It seems like a circular include issue. Do CTextureManager.h or CTile.h include each other or CEngine.h?
To solve this, use forward declarations where possible. For example, your class doesn't need to include CTile.h - it can look like:
#ifndef CENGINE_H
#define CENGINE_H
#include "SFML\Graphics.hpp"
#include "CTextureManager.h"
class CTile; //forward declaration instead of include
class CEngine
{
private:
//Create instance of CTextureManager
CTextureManager textureManager;
//Load textures
void LoadTextures();
//New tile
CTile* testTile;
bool Running; //Is running?
sf::RenderWindow* window; //Create render window
public:
CEngine(); //Constructor
int Execute(); //Execute
bool OnInit(); //On intialization
void GameLoop(); //Main game loop
void Render(); //Render function
void Update(); //Update
};
#endif
Similar for the other 2 headers.
Also, _CENGINE_H is not a valid identifier - note how I renamed it to CENGINE_H.