Write Codev 0.0 0.0 0.0
 v 0.0 0.0 1.0
 v 0.0 1.0 0.0
 v 0.0 1.0 1.0
 v 1.0 0.0 0.0
 v 1.0 0.0 1.0
 v 1.0 1.0 0.0
 v 1.0 1.0 1.0

 vn 0.0 0.0 1.0
 vn 0.0 0.0 -1.0
 vn 0.0 1.0 0.0
 vn 0.0 -1.0 0.0
 vn 1.0 0.0 0.0
 vn -1.0 0.0 0.0

 f 1//2 7//2 5//2
 f 1//2 3//2 7//2 
 f 1//6 4//6 3//6 
 f 1//6 2//6 4//6 
 f 3//3 8//3 7//3 
 f 3//3 4//3 8//3 
 f 5//5 7//5 8//5 
 f 5//5 8//5 6//5 
 f 1//4 5//4 6//4 
 f 1//4 6//4 2//4 
 f 2//1 6//1 8//1 
 f 2//1 8//1 4//1 

Write Costruct Triangle {
        
        int v1;
        int v2;
        int v3;
        
 };

 struct Vertex {
       
       float x;
       float y;
       float z;
             
 };

 using namespace std;

 static void display(void)
 {    
     // move the view a lil down so we could get the tree.obj in the centre of screen
     glTranslatef(0.0, -0.50, 0.0);
      
     // clear all pixels
     glClear(GL_COLOR_BUFFER_BIT);
     glColor3f(1.0, 1.0, 1.0);
     
     Vertex v[50000];
     Triangle t[50000];
     
     int vertexCount = 0;
     int triangleCount = 0;
     
     char line[100];

 FILE *fp = fopen("tree.obj","r");
     
     if (fp != NULL)
     {
         while (fgets(line, 99, fp))
         {
               if (line[0] == 'v')
               {
                  
sscanf(line, "%*c %f %f %f", &v[vertexCount].x,
&v[vertexCount].y,  &v[vertexCount].z);                  
                   vertexCount++;
               } 
               else if (line[0] == 'f')
               {
                   sscanf(line, "%*c %d %d %d", &t[triangleCount].v1, &t[triangleCount].v2, &t[triangleCount].v3);
                   triangleCount++;
               }   
         }   
     }
     
     fclose(fp);

struct Triangle {
        
        int v1;
        int v2;
        int v3;
    
 };
 struct Vertex {
       
       float x;
       float y;
       float z;
             
 };
 Vertex v[50000];

   Triangle t[50000];
 Code 

 struct objet
 {  int v1
 int v2
 int v3 ;
     struct objet *svt;
 }; typedef struct objet triangles;  
 struct objet
 {  float x
 float y
 float  z ;
     struct objet *svt;
 }; typedef struct objet vertexs;  
 traingle *t
 vertex *v

v[vertexCount].x

  vertex->x

for (int i=0; i

while (t!=NULL)

    (v[t[i].v1-1].x , v[t[i].v1-1].y, v[t[i].v1-1].z );      (v[t[i].v2-1].x , v[t[i].v2-1], v[t[i].v2-1].z );   (v[t[i].v3-1].x , v[t[i].v3-1].y , v[t[i].v3-1].z );  

v 0.0 0.0 0.0

v 0.0 0.0 0.0 v 0.0 1.0 0.0 v 0.0 1.0 1.0

struct Float3
{
     float x,y,z;
};
typedef Float3 Triangle;
typedef Float3 Vertex;

// Later
Triangle t;
Vertex v;

float arrItems[5];
// These two lines are equivalent
arrItems[i] = 4;
*(&arrItems[0] + i) = 4;

// These two lines are equivalent
arrItems[i] = 4;
*(arrItems + i) = 4;

float *pItem = arrItems;
*pItem = 5;
pItem++;
*pItem = 10;
pItem++;

float *pItem = arrItems;
float *pEnd = arrItems + 5;   // The item beyond the last item
while (pItem != pEnd)
{
       // Do stuff

       // Advance to next
       pItem++;
}

  
 for (int i=0; i<trianglecount;>        {
            glVertex3f(v[t[i].v1-1].x * 0.25, v[t[i].v1-1].y * 0.25, v[t[i].v1-1].z * 0.25);
            glVertex3f(v[t[i].v2-1].x * 0.25, v[t[i].v2-1].y * 0.25, v[t[i].v2-1].z * 0.25);
            glVertex3f(v[t[i].v3-1].x * 0.25, v[t[i].v3-1].y * 0.25, v[t[i].v3-1].z * 0.25);
        }

    (v[t[i].v1-1].x , v[t[i].v1-1].y, v[t[i].v1-1].z );      (v[t[i].v2-1].x , v[t[i].v2-1], v[t[i].v2-1].z );   (v[t[i].v3-1].x , v[t[i].v3-1].y , v[t[i].v3-1].z );  

typedef struct
{
     // Data
}Item;
 
Item *pArrItems = malloc(sizeof(Item) * ItemsCount);

pArrItems[index];

// Example: Append Item
ItemsCount++;
pArrItems = realloc(pArrItems, sizeof(Item) * ItemsCount);
Item *pNewItem = pArrItems[ItemsCount-1];

for (int i=0;i<itemscount;i++)>
{
     // Access pArrItems[i]
}

typedef struct
{
    // Data
    Item *Next;
}Item;
 
typedef struct
{
     Item *Head;
     int ItemsCount;
}List;
 
List lstItems = {NULL, 0};

// Access item at index
assert(index < ItemsCount);
Item *pItemi = lstItems.pHead;
while (index--)
     pItemi = pItemi->Next;
 
// pItemi points to Item at index

// Example: Prepend Item
Item *pNewItem = malloc(sizeof(Item));
pNewItem->Next = lstItems.Head;
lstItems.Head = pNewItem;
lstItems.ItemsCount++;

Item* pItem = lstItems.Head;
while (pItem)  // or (pItem != NULL)
{
      // Access pItem
 
      // Advance to next item
      pItem = pItem->Next;
}

/*
 *		This Code Was Created By Jeff Molofee 2000
 *		A HUGE Thanks To Fredric Echols For Cleaning Up
 *		And Optimizing The Base Code, Making It More Flexible!
 *		If You've Found This Code Useful, Please Let Me Know.
 *		Visit My Site At nehe.gamedev.net
 */

#include 		// Header File For Windows
#include <gl\gl.h>			// Header File For The OpenGL32 Library
#include <gl\glu.h>		// Header File For The GLu32 Library
#include <gl\glaux.h>		// Header File For The Glaux Library
#include

HDC		hDC=NULL;		// Private GDI Device Context
HGLRC		hRC=NULL;		// Permanent Rendering Context
HWND		hWnd=NULL;	// Holds Our Window Handle
HINSTANCE	hInstance;		// Holds The Instance Of The Application

bool	keys[256];		// Array Used For The Keyboard Routine
bool	active=TRUE;		// Window Active Flag Set To TRUE By Default
bool	fullscreen=TRUE;	// Fullscreen Flag Set To Fullscreen Mode By Default
struct vertex

{

    float x,y,z;

};

struct triangle

{

    int v1,v2,v3;

};

vector v;

vector t;





float theta=0;

LRESULT	CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);	// Declaration For WndProc

GLvoid ReSizeGLScene(GLsizei width, GLsizei height)	// Resize And Initialize The GL Window
{
	if (height==0)				// Prevent A Divide By Zero By
	{
		height=1;				// Making Height Equal One
	}

	glViewport(0,0,width,height);			// Reset The Current Viewport

	glMatrixMode(GL_PROJECTION);			// Select The Projection Matrix
	glLoadIdentity();					// Reset The Projection Matrix

	// Calculate The Aspect Ratio Of The Window
	gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);

	glMatrixMode(GL_MODELVIEW);				// Select The Modelview Matrix
	glLoadIdentity();					// Reset The Modelview Matrix
}

int InitGL(GLvoid)						// All Setup For OpenGL Goes Here
{
	glShadeModel(GL_SMOOTH);				// Enable Smooth Shading
	glClearColor(0.0f, 0.0f, 0.0f, 0.5f);		// Black Background
	glClearDepth(1.0f);				// Depth Buffer Setup
	glEnable(GL_DEPTH_TEST);				// Enables Depth Testing
	glDepthFunc(GL_LEQUAL);				// The Type Of Depth Testing To Do
	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);	// Really Nice Perspective Calculations
	return TRUE;					// Initialization Went OK
}




void load_inf()

{

    FILE *fp=fopen("cone.obj","r");

    vertex v1;

    triangle t1;

    char line[100];

   if (fp != NULL)

     {

         while (fgets(line, 100, fp))

         {



               if (line[0] == 'v' && line[1]!='n')

               {

                   sscanf(line, "%*c %f %f %f", &v1.x, &v1.y,  &v1.z);                  

                   v.push_back(v1);

               }

               else if (line[0] == 'f')

               {

                   sscanf(line,"%*c %d %d %d", &t1.v1, &t1.v2, &t1.v3);

                  t.push_back(t1);

               } 



         }  

     }

}
int DrawGLScene(GLvoid) // Here's Where We Do All The Drawing
{

    FILE *fp=fopen("cone.obj","r");

    vertex v1;

    triangle t1;

    char line[100];

   if (fp != NULL)

     {

         while (fgets(line, 100, fp))

         {



               if (line[0] == 'v' && line[1]!='n')

               {

                   sscanf(line, "%*c %f %f %f", &v1.x, &v1.y,  &v1.z);                  

                   v.push_back(v1);

               }

               else if (line[0] == 'f')

               {

                   sscanf(line,"%*c %d %d %d", &t1.v1, &t1.v2, &t1.v3);

                  t.push_back(t1);

               } 



         }  

     }

   for (int i=0;i<t.size();i++)>

    {

        glBegin(GL_TRIANGLES);

glColor3f(0.0f,0.0f,0.1f);

 glVertex3f(v[t[i].v1-1].x*0.25, v[t[i].v1-1].y*0.25, v[t[i].v1-1].z*0.25);

 glVertex3f(v[t[i].v2-1].x*0.25, v[t[i].v2-1].y *0.25, v[t[i].v2-1].z *0.25);

 glVertex3f(v[t[i].v3-1].x *0.25, v[t[i].v3-1].y*0.25 , v[t[i].v3-1].z*0.25);

glEnd();
			// Done Drawing The Quad
	return TRUE;	// Keep Going
}

GLvoid KillGLWindow(GLvoid) // Properly Kill The Window
{
	if (fullscreen)				// Are We In Fullscreen Mode?
	{
		ChangeDisplaySettings(NULL,0);	// If So Switch Back To The Desktop
		ShowCursor(TRUE);			// Show Mouse Pointer
	}

	if (hRC)					// Do We Have A Rendering Context?
	{
		if (!wglMakeCurrent(NULL,NULL))	// Are We Able To Release The DC And RC Contexts?
		{
			MessageBox(NULL,"Release Of DC And RC Failed.","SHUTDOWN ERROR",
						MB_OK | MB_ICONINFORMATION);
		}

		if (!wglDeleteContext(hRC))		// Are We Able To Delete The RC?
		{
			MessageBox(NULL,"Release Rendering Context Failed.","SHUTDOWN ERROR",
								MB_OK | MB_ICONINFORMATION);
		}
		hRC=NULL;				// Set RC To NULL
	}

	if (hDC && !ReleaseDC(hWnd,hDC))		// Are We Able To Release The DC
	{
		MessageBox(NULL,"Release Device Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hDC=NULL;				// Set DC To NULL
	}

	if (hWnd && !DestroyWindow(hWnd))		// Are We Able To Destroy The Window?
	{
		MessageBox(NULL,"Could Not Release hWnd.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hWnd=NULL;			// Set hWnd To NULL
	}

	if (!UnregisterClass("OpenGL",hInstance))	// Are We Able To Unregister Class
	{
		MessageBox(NULL,"Could Not Unregister Class.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
		hInstance=NULL;			// Set hInstance To NULL
	}
}

/*	This Code Creates Our OpenGL Window.  Parameters Are:			*
 *	title			- Title To Appear At The Top Of The Window	*
 *	width			- Width Of The GL Window Or Fullscreen Mode	*
 *	height			- Height Of The GL Window Or Fullscreen Mode	*
 *	bits			- Number Of Bits To Use For Color (8/16/24/32)*
 *	fullscreenflag	- Use Fullscreen Mode (TRUE) Or Windowed Mode (FALSE)	*/

BOOL CreateGLWindow(char* title, int width, int height, int bits, bool fullscreenflag)
{
	GLuint		PixelFormat;	// Holds The Results After Searching For A Match
	WNDCLASS	wc;			// Windows Class Structure
	DWORD		dwExStyle;	// Window Extended Style
	DWORD		dwStyle;		// Window Style
	RECT		WindowRect;	// Grabs Rectangle Upper Left / Lower Right Values
	WindowRect.left=(long)0;			// Set Left Value To 0
	WindowRect.right=(long)width;		// Set Right Value To Requested Width
	WindowRect.top=(long)0;				// Set Top Value To 0
	WindowRect.bottom=(long)height;		// Set Bottom Value To Requested Height

	fullscreen=fullscreenflag;			// Set The Global Fullscreen Flag

	hInstance		= GetModuleHandle(NULL);		// Grab An Instance For Our Window
	wc.style		= CS_HREDRAW | CS_VREDRAW | CS_OWNDC;// Redraw On Size, And Own DC For Window.
	wc.lpfnWndProc	= (WNDPROC) WndProc;		// WndProc Handles Messages
	wc.cbClsExtra	= 0;				// No Extra Window Data
	wc.cbWndExtra	= 0;				// No Extra Window Data
	wc.hInstance	= hInstance;			// Set The Instance
	wc.hIcon		= LoadIcon(NULL, IDI_WINLOGO);	// Load The Default Icon
	wc.hCursor	= LoadCursor(NULL, IDC_ARROW);	// Load The Arrow Pointer
	wc.hbrBackground	= NULL;			// No Background Required For GL
	wc.lpszMenuName		= NULL;		// We Don't Want A Menu
	wc.lpszClassName	= "OpenGL";		// Set The Class Name

	if (!RegisterClass(&wc))			// Attempt To Register The Window Class
	{
		MessageBox(NULL,"Failed To Register The Window Class.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;  // Return FALSE
	}

	if (fullscreen)	// Attempt Fullscreen Mode?
	{
		DEVMODE dmScreenSettings;  // Device Mode
		memset(&dmScreenSettings,0,sizeof(dmScreenSettings));	// Makes Sure Memory's Cleared
		dmScreenSettings.dmSize=sizeof(dmScreenSettings);	// Size Of The Devmode Structure
		dmScreenSettings.dmPelsWidth	= width;		// Selected Screen Width
		dmScreenSettings.dmPelsHeight	= height;		// Selected Screen Height
		dmScreenSettings.dmBitsPerPel	= bits;		// Selected Bits Per Pixel
		dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;

		// Try To Set Selected Mode And Get Results.  NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar.
		if (ChangeDisplaySettings(&dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL)
		{
			// If The Mode Fails, Offer Two Options.  Quit Or Use Windowed Mode.
			if (MessageBox(NULL,"The Requested Fullscreen Mode Is Not Supported By\n"
				"Your Video Card. Use Windowed Mode Instead?",
				"NeHe GL",MB_YESNO|MB_ICONEXCLAMATION)==IDYES)
			{
				fullscreen=FALSE;	// Windowed Mode Selected.  Fullscreen = FALSE
			}
			else
			{
				// Pop Up A Message Box Letting User Know The Program Is Closing.
				MessageBox(NULL,"Program Will Now Close.","ERROR",MB_OK|MB_ICONSTOP);
				return FALSE;  // Return FALSE
			}
		}
	}

	if (fullscreen)			// Are We Still In Fullscreen Mode?
	{
		dwExStyle=WS_EX_APPWINDOW;		// Window Extended Style
		dwStyle=WS_POPUP;			// Windows Style
		ShowCursor(FALSE);			// Hide Mouse Pointer
	}
	else
	{
		dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;		// Window Extended Style
		dwStyle=WS_OVERLAPPEDWINDOW;			// Windows Style
	}

	AdjustWindowRectEx(&WindowRect, dwStyle, FALSE, dwExStyle);	// Adjust Window To True Requested Size

	// Create The Window
	if (!(hWnd=CreateWindowEx(	dwExStyle,	// Extended Style For The Window
				"OpenGL",				// Class Name
				title,				// Window Title
				dwStyle |				// Defined Window Style
				WS_CLIPSIBLINGS |			// Required Window Style
				WS_CLIPCHILDREN,			// Required Window Style
				0, 0,				// Window Position
				WindowRect.right-WindowRect.left,	// Calculate Window Width
				WindowRect.bottom-WindowRect.top,	// Calculate Window Height
				NULL,				// No Parent Window
				NULL,				// No Menu
				hInstance,			// Instance
				NULL)))				// Dont Pass Anything To WM_CREATE
	{
		KillGLWindow();	// Reset The Display
		MessageBox(NULL,"Window Creation Error.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;	// Return FALSE
	}

	static	PIXELFORMATDESCRIPTOR pfd=		// pfd Tells Windows How We Want Things To Be
	{
		sizeof(PIXELFORMATDESCRIPTOR),	// Size Of This Pixel Format Descriptor
		1,				// Version Number
		PFD_DRAW_TO_WINDOW |		// Format Must Support Window
		PFD_SUPPORT_OPENGL |		// Format Must Support OpenGL
		PFD_DOUBLEBUFFER,			// Must Support Double Buffering
		PFD_TYPE_RGBA,			// Request An RGBA Format
		bits,				// Select Our Color Depth
		0, 0, 0, 0, 0, 0,			// Color Bits Ignored
		0,				// No Alpha Buffer
		0,				// Shift Bit Ignored
		0,				// No Accumulation Buffer
		0, 0, 0, 0,			// Accumulation Bits Ignored
		16,				// 16Bit Z-Buffer (Depth Buffer)  
		0,				// No Stencil Buffer
		0,				// No Auxiliary Buffer
		PFD_MAIN_PLANE,			// Main Drawing Layer
		0,				// Reserved
		0, 0, 0				// Layer Masks Ignored
	};

	if (!(hDC=GetDC(hWnd)))			// Did We Get A Device Context?
	{
		KillGLWindow();			// Reset The Display
		MessageBox(NULL,"Can't Create A GL Device Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;			// Return FALSE
	}

	if (!(PixelFormat=ChoosePixelFormat(hDC,&pfd)))	// Did Windows Find A Matching Pixel Format?
	{
		KillGLWindow();				// Reset The Display
		MessageBox(NULL,"Can't Find A Suitable PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;				// Return FALSE
	}

	if(!SetPixelFormat(hDC,PixelFormat,&pfd))		// Are We Able To Set The Pixel Format?
	{
		KillGLWindow();				// Reset The Display
		MessageBox(NULL,"Can't Set The PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;				// Return FALSE
	}

	if (!(hRC=wglCreateContext(hDC)))			// Are We Able To Get A Rendering Context?
	{
		KillGLWindow();				// Reset The Display
		MessageBox(NULL,"Can't Create A GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;				// Return FALSE
	}

	if(!wglMakeCurrent(hDC,hRC))			// Try To Activate The Rendering Context
	{
		KillGLWindow();				// Reset The Display
		MessageBox(NULL,"Can't Activate The GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;				// Return FALSE
	}

	ShowWindow(hWnd,SW_SHOW);				// Show The Window
	SetForegroundWindow(hWnd);				// Slightly Higher Priority
	SetFocus(hWnd);					// Sets Keyboard Focus To The Window
	ReSizeGLScene(width, height);			// Set Up Our Perspective GL Screen

	if (!InitGL())					// Initialize Our Newly Created GL Window
	{
		KillGLWindow();				// Reset The Display
		MessageBox(NULL,"Initialization Failed.","ERROR",MB_OK|MB_ICONEXCLAMATION);
		return FALSE;				// Return FALSE
	}

	return TRUE;					// Success
}

LRESULT CALLBACK WndProc(	HWND	hWnd,	// Handle For This Window
			UINT	uMsg,			// Message For This Window
			WPARAM	wParam,			// Additional Message Information
			LPARAM	lParam)			// Additional Message Information
{
	switch (uMsg)	// Check For Windows Messages
	{
		case WM_ACTIVATE:	// Watch For Window Activate Message
		{
			if (!HIWORD(wParam))	// Check Minimization State
			{
				active=TRUE;	// Program Is Active
			}
			else
			{
				active=FALSE;	// Program Is No Longer Active
			}

			return 0;			// Return To The Message Loop
		}

		case WM_SYSCOMMAND:		// Intercept System Commands
		{
			switch (wParam)		// Check System Calls
			{
				case SC_SCREENSAVE:	// Screensaver Trying To Start?
				case SC_MONITORPOWER:	// Monitor Trying To Enter Powersave?
				return 0;			// Prevent From Happening
			}
			break;				// Exit
		}

		case WM_CLOSE:				// Did We Receive A Close Message?
		{
			PostQuitMessage(0);		// Send A Quit Message
			return 0;				// Jump Back
		}

		case WM_KEYDOWN:				// Is A Key Being Held Down?
		{
			keys[wParam] = TRUE;		// If So, Mark It As TRUE
			return 0;				// Jump Back
		}

		case WM_KEYUP:				// Has A Key Been Released?
		{
			keys[wParam] = FALSE;		// If So, Mark It As FALSE
			return 0;				// Jump Back
		}

		case WM_SIZE:				// Resize The OpenGL Window
		{
			ReSizeGLScene(LOWORD(lParam),HIWORD(lParam));  // LoWord=Width, HiWord=Height
			return 0;					// Jump Back
		}
	}

	// Pass All Unhandled Messages To DefWindowProc
	return DefWindowProc(hWnd,uMsg,wParam,lParam);
}

int WINAPI WinMain(	HINSTANCE hInstance,	// Instance
			HINSTANCE hPrevInstance,	// Previous Instance
			LPSTR	 lpCmdLine,	// Command Line Parameters
			int	 nCmdShow)	// Window Show State
{
	MSG		msg;	// Windows Message Structure
	BOOL	done=FALSE;	// Bool Variable To Exit Loop

	// Ask The User Which Screen Mode They Prefer
	if (MessageBox(NULL,"Would You Like To Run In Fullscreen Mode?",
			  "Start FullScreen?",MB_YESNO|MB_ICONQUESTION)==IDNO)
	{
		fullscreen=FALSE;		// Windowed Mode
	}

	// Create Our OpenGL Window
	if (!CreateGLWindow("NeHe's Color Tutorial",640,480,16,fullscreen))
	{
		return 0;		// Quit If Window Was Not Created
	}

	while(!done)	// Loop That Runs While done=FALSE
	{
		if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))	// Is There A Message Waiting?
		{
			if (msg.message==WM_QUIT)		// Have We Received A Quit Message?
			{
				done=TRUE;  // If So done=TRUE
			}
			else	// If Not, Deal With Window Messages
			{
				TranslateMessage(&msg);	// Translate The Message
				DispatchMessage(&msg);	// Dispatch The Message
			}
		}
		else					// If There Are No Messages
		{
			// Draw The Scene.  Watch For ESC Key And Quit Messages From DrawGLScene()
			// Active? Was There A Quit Received?

			if ((active && !DrawGLScene()) || keys[VK_ESCAPE])
 			{
				done=TRUE;	// ESC or DrawGLScene Signalled A Quit
			}
			else			// Not Time To Quit, Update Screen
			{
				SwapBuffers(hDC);			// Swap Buffers (Double Buffering)
			}

			if (keys[VK_F1])				// Is F1 Being Pressed?
			{
				keys[VK_F1]=FALSE;			// If So Make Key FALSE
				KillGLWindow();			// Kill Our Current Window
				fullscreen=!fullscreen;		// Toggle Fullscreen / Windowed Mode
				// Recreate Our OpenGL Window
				if (!CreateGLWindow("NeHe's Color Tutorial",640,480,16,fullscreen))
				{
					return 0;	 // Quit If Window Was Not Created
				}
			}
		}
	}

	// Shutdown
	KillGLWindow();		// Kill The Window
	return (msg.wParam);	// Exit The Program
}

Compiling...
ex.cpp
...\lesson03\ex\ex.cpp(39) : error C2143: syntax error : missing ';' before '<'
...\lesson03\ex\ex.cpp(39) : error C2501: 'vector' : missing storage-class or type specifiers
...\lesson03\ex\ex.cpp(39) : error C2143: syntax error : missing ';' before '<'
...\lesson03\ex\ex.cpp(41) : error C2143: syntax error : missing ';' before '<'
...\lesson03\ex\ex.cpp(41) : error C2501: 'vector' : missing storage-class or type specifiers
...\lesson03\ex\ex.cpp(41) : error C2086: 'vector' : redefinition
...\lesson03\ex\ex.cpp(41) : error C2143: syntax error : missing ';' before '<'
...\lesson03\ex\ex.cpp(111) : error C2065: 'v' : undeclared identifier
...\lesson03\ex\ex.cpp(111) : error C2228: left of '.push_back' must have class/struct/union type
...\lesson03\ex\ex.cpp(121) : error C2065: 't' : undeclared identifier
...\lesson03\ex\ex.cpp(121) : error C2228: left of '.push_back' must have class/struct/union type
...\lesson03\ex\ex.cpp(159) : error C2228: left of '.push_back' must have class/struct/union type
...\lesson03\ex\ex.cpp(169) : error C2228: left of '.push_back' must have class/struct/union type
...\lesson03\ex\ex.cpp(179) : error C2228: left of '.size' must have class/struct/union type
...\lesson03\ex\ex.cpp(187) : error C2109: subscript requires array or pointer type
...\lesson03\ex\ex.cpp(187) : error C2228: left of '.v1' must have class/struct/union type
...\lesson03\ex\ex.cpp(187) : error C2228: left of '.x' must have class/struct/union type
...\lesson03\ex\ex.cpp(187) : error C2109: subscript requires array or pointer type
...\lesson03\ex\ex.cpp(187) : error C2228: left of '.v1' must have class/struct/union type
...\lesson03\ex\ex.cpp(187) : error C2228: left of '.y' must have class/struct/union type
...\lesson03\ex\ex.cpp(187) : error C2109: subscript requires array or pointer type
...\lesson03\ex\ex.cpp(187) : error C2228: left of '.v1' must have class/struct/union type
...\lesson03\ex\ex.cpp(187) : error C2228: left of '.z' must have class/struct/union type
...\lesson03\ex\ex.cpp(189) : error C2109: subscript requires array or pointer type
...\lesson03\ex\ex.cpp(189) : error C2228: left of '.v2' must have class/struct/union type
...\lesson03\ex\ex.cpp(189) : error C2228: left of '.x' must have class/struct/union type
...\lesson03\ex\ex.cpp(189) : error C2109: subscript requires array or pointer type
...\lesson03\ex\ex.cpp(189) : error C2228: left of '.v2' must have class/struct/union type
...\lesson03\ex\ex.cpp(189) : error C2228: left of '.y' must have class/struct/union type
...\lesson03\ex\ex.cpp(189) : error C2109: subscript requires array or pointer type
...\lesson03\ex\ex.cpp(189) : error C2228: left of '.v2' must have class/struct/union type
...\lesson03\ex\ex.cpp(189) : error C2228: left of '.z' must have class/struct/union type
...\lesson03\ex\ex.cpp(191) : error C2109: subscript requires array or pointer type
...\lesson03\ex\ex.cpp(191) : error C2228: left of '.v3' must have class/struct/union type
...\lesson03\ex\ex.cpp(191) : error C2228: left of '.x' must have class/struct/union type
...\lesson03\ex\ex.cpp(191) : error C2109: subscript requires array or pointer type
...\lesson03\ex\ex.cpp(191) : error C2228: left of '.v3' must have class/struct/union type
...\lesson03\ex\ex.cpp(191) : error C2228: left of '.y' must have class/struct/union type
...\lesson03\ex\ex.cpp(191) : error C2109: subscript requires array or pointer type
...\lesson03\ex\ex.cpp(191) : error C2228: left of '.v3' must have class/struct/union type
...\lesson03\ex\ex.cpp(191) : error C2228: left of '.z' must have class/struct/union type
...\lesson03\ex\ex.cpp(199) : error C2601: 'KillGLWindow' : local function definitions are illegal
...\lesson03\ex\ex.cpp(247) : error C2601: 'CreateGLWindow' : local function definitions are illegal
...\lesson03\ex\ex.cpp(415) : error C2601: 'WndProc' : local function definitions are illegal
...\lesson03\ex\ex.cpp(476) : error C2601: 'WinMain' : local function definitions are illegal
...\lesson03\ex\ex.cpp(536) : fatal error C1004: unexpected end of file found
Error executing cl.exe.

ex.exe - 46 error(s), 0 warning(s)

#include 
using std::vector;

std::vector list;